Malicious PDF — malware analysis report

Static analysis result for SHA-256 614bcd56e151fb41…

MALICIOUS

PDF

75.2 KB Created: 2021-09-06 12:56:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 893ee0cd8df3e5e134564b3f9648938e SHA-1: e002d1506a8a2327a4e942d33344f9d51c326d72 SHA-256: 614bcd56e151fb41f56fa2b55b49e24025ca6b1b10e6540c1d7f4eeaf2ae2c9d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised websites or link farms, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious document lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://huntic.ru/uplcv?utm_term=apc+surge+protector+battery+backup+325va+manual PDF link annotation
    • http://www.findvoters.com/userfiles/file/nativezobariduwesataz.pdfIn PDF document text
    • http://kartywspomnien.pl/uploads/assets/file/vodisakafemejetaxawu.pdfIn PDF document text
    • http://mazraeir.com/images/upload/files/telaze.pdfIn PDF document text
    • http://garderoba.sk/images/_file/93743388469.pdfIn PDF document text
    • https://rcvizovice.cz/ckfinder/userfiles/files/wuzipigigamudisawef.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1611343a37666f---wadenobavodakutipebi.pdfIn PDF document text
    • http://happypalettebnb.com/CKEdit/upload/files/46681365462.pdfIn PDF document text
    • http://sunrui-ti.com/d/files/pebinuwoninawer.pdfIn PDF document text
    • http://vinhthuan.com/upload/files/64033581544.pdfIn PDF document text
    • https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c2943a89420---bijerax.pdfIn PDF document text
    • https://chennothinterios.com/uploads/file/rarosora.pdfIn PDF document text
    • http://strandedtattoo.net/file/25488946999.pdfIn PDF document text
    • https://oknoplus-omsk.ru/wp-content/plugins/super-forms/uploads/php/files/03de7a7065d1d0dd0348b0bda016ae39/38538372998.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/m3o30kmmf2q379m23l0f4oasic/zewinew.pdfIn PDF document text
    • https://www.lloydsunder30s.com/ckfinder/userfiles/files/mewepenonejuvepi.pdfIn PDF document text
    • http://mabifitness.it/userfiles/files/13825171345.pdfIn PDF document text
    • https://pankalconstructora.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b972f69bfe---11381255411.pdfIn PDF document text
    • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/16072a75903e8d---46971729183.pdfIn PDF document text
    • https://amerismithenterprises.com/wp-content/plugins/super-forms/uploads/php/files/693b887a3af663f7096a63ec41e608ea/mazipozez.pdfIn PDF document text
    • http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1fe5cb1802---bopeponigepixozaxam.pdfIn PDF document text
    • http://anhopphat.com/uploads/files/xuwivedivek.pdfIn PDF document text
    • https://vegan-eshop.cz/data/file/14741350594.pdfIn PDF document text
    • https://bachson.net/upload/file/ketegigizozaxivu.pdfIn PDF document text
    • http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609422d8208e8---mifozunajufidolosinusoluw.pdfIn PDF document text
    • https://bagstyle.uz/images/file/fubisefino.pdfIn PDF document text
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bc8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC8C 17652 bytes
SHA-256: 305204981dfc197b075d6f355d574d914509cf42272549342ab96ce3f844b90c
font_01_sfnt_off0000e96f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE96F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010186.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10186 11544 bytes
SHA-256: 051f41329335cc4b50a75a0dbf16a7aa269464522e05acb03d07f3d11495fe35

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