Malicious PDF — malware analysis report

Static analysis result for SHA-256 62b035f2eb0442a0…

MALICIOUS

PDF

97.5 KB Created: 2021-07-13 20:16:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: e1b8d614da033a8a7d051c3475bbdfcc SHA-1: 886956d1333e497c2de469c7004e8ff575bb8edf SHA-256: 62b035f2eb0442a03fefa023909f19b54685a6bd8de9c180dc2d38313bba900e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains a link farm pointing to compromised WordPress upload storage, suggesting it is used to distribute further malicious content. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9916

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://makemycake.gr/wp-content/plugins/super-forms/uploads/php/files/iuq0kuc24iorc3dtic050s394t/92885984279.pdf In PDF document text
    • https://samtee.com/admin/images/file/wuduniwug.pdfIn PDF document text
    • https://efnnma.org/files/file/94962639581.pdfIn PDF document text
    • https://www.cr-sdc.org/wp-content/plugins/super-forms/uploads/php/files/6020189f58961aadf304d4578322bb91/76783179209.pdfIn PDF document text
    • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/3f9ad161qc7v4b5u3mpjoe0qi6/pisobovesatuza.pdfIn PDF document text
    • http://www.apsetedavisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608074092a636---pokojabeveregidegovakutak.pdfIn PDF document text
    • https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf42488f527---97573867157.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094ab282ab64.pdfIn PDF document text
    • http://pivotal-technologies.com/userfiles/file/gapefidorakixakopexa.pdfIn PDF document text
    • https://nada70.org/userfiles/file/jadutixetuler.pdfIn PDF document text
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1023d20aef---79498353806.pdfIn PDF document text
    • http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160734d9fdd6f8---42435754074.pdfIn PDF document text
    • http://abwlanham.com/uploads/files/nefisagorurapepeg.pdfIn PDF document text
    • https://www.pennlighting.com/wp-content/plugins/super-forms/uploads/php/files/08d79eafbc19ac3e82e3aaea02ae6725/posibapipos.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/j5cal9l9uodptiu04dpc88vgue/bagigaxirebajusirumu.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/kh66vbt5un91q7td76tem2uiq6/67001001224.pdfIn PDF document text
    • http://maidnheaven.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609993c62efdd---46247753530.pdfIn PDF document text
    • https://www.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/4b0b0c429f5c2c2da2e6b39150227127/77177756164.pdfIn PDF document text
    • http://gsemilia.it/userfiles/files/dakuz.pdfIn PDF document text
    • https://apoc.com.au/wp-content/plugins/super-forms/uploads/php/files/0fe6ff58d4d66da054de66536395e633/gobagefuxoditebexad.pdfIn PDF document text
    • http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1609621c4110a7---54397831161.pdfIn PDF document text
    • https://stratasphere.online/userfiles/file/timuzaporote.pdfIn PDF document text
    • https://stpetejazz.com/wp-content/plugins/super-forms/uploads/php/files/ah3n7cgpurqb38ae6ngpgl37e2/55188952016.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=antenna+theory+analysis+and+design+4th+edition+solutionPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00015287.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x15287 21940 bytes
SHA-256: c1cc556d2f49c996f191d1fcd7606a22bfc1f6712199f9f8fbd8dafdf8244cc5
font_00_sfnt_off0000f56f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF56F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010d86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D86 10800 bytes
SHA-256: a96660e18712308d1bd8f568abcd17e8f6a3e0d4b6434d2a95664de439945362
font_02_sfnt_off0001263d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1263D 17008 bytes
SHA-256: bd8761cbcb0990b9ac353fbc896ffe7cb47088ed5e9022be78d0f39e391bf242

Open this report in the interactive analyzer, or submit your own file for analysis.