Malicious PDF — malware analysis report

Static analysis result for SHA-256 908076a1fc159e17…

MALICIOUS

PDF

78.5 KB Created: 2021-08-12 17:27:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: e65da814cfe060debd140aed84a90e04 SHA-1: 7403cff943186bad68dbeae87f6e0423e677a74d SHA-256: 908076a1fc159e174413c479cfa7e3c0c93eb985b100b6bf8f2cc1285c2c4f47
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as a malicious PDF by ClamAV and an ML classifier. It contains numerous links pointing to compromised WordPress sites and other domains, suggesting a link farm designed to redirect users. The PDF's structure and embedded URLs indicate it's likely a phishing lure or a distribution point for further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://catamma.ru/uplcv?utm_term=cadd+legacy+pump+pouch PDF link annotation
    • http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ceccdd6afa---73338189317.pdfIn PDF document text
    • http://hotelbellevuepalermo.com/userfiles/files/wiliwodebaguliveru.pdfIn PDF document text
    • https://hbfilm.ca/resimler/files/nonovu.pdfIn PDF document text
    • http://1night2daytour.com/ckupload/files/45419156439.pdfIn PDF document text
    • https://pirkitpadangas.lt/ckfinder/userfiles/files/judowo.pdfIn PDF document text
    • http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b0c9cef3f09---depejavulupadikelemodog.pdfIn PDF document text
    • https://baohohoanglong.com/userfiles/file/domoxupimofajog.pdfIn PDF document text
    • http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/1610815de98da3---povijarulaloxunakejox.pdfIn PDF document text
    • https://firsatpin.com/calisma2/files/uploads/51238551987.pdfIn PDF document text
    • http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160c1359b48723---88862257635.pdfIn PDF document text
    • http://designerhouse.ru/upload/files/38144144652.pdfIn PDF document text
    • https://www.sesc.com.ua/wp-content/plugins/super-forms/uploads/php/files/llrnrsi65r40ma2m7ioflvf062/6400050716.pdfIn PDF document text
    • http://zuche0551.com/upload/file/41316485068.pdfIn PDF document text
    • http://evevoyance.fr/adh/.-/file/jelavemezoko.pdfIn PDF document text
    • http://kerekagy.hu/UserFiles//file/lusituwasewebaxakad.pdfIn PDF document text
    • http://tunesistudio.eu/userfiles/files/38819255052.pdfIn PDF document text
    • http://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2593cb03c6---93101600164.pdfIn PDF document text
    • http://njf724.com/basefile/janatalnajafcom/files/zojukizapabakofubujexidew.pdfIn PDF document text
    • https://vegas-shop.net/uploads/files/menuzigilubowen.pdfIn PDF document text
    • http://stark-tools.ru/images/uploaded/371656990.pdfIn PDF document text
    • https://bauarch.bg/files/23435966555.pdfIn PDF document text
    • https://groupunsur1.com/contents//files/legeduxijowenozum.pdfIn PDF document text
    • http://staresecurity.com/userfiles/file/bajirukafofafanuro.pdfIn PDF document text
    • https://securitydm.com/slicice/file/23583990208.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_off0000d07f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD07F 16792 bytes
SHA-256: ea6a46a653cee1a3a1f1828aebd4eb741ce78dc6e3740b4a801db08dcb73325c
font_01_sfnt_off0000fc0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC0C 10644 bytes
SHA-256: 011a84a62df6f08e87da7762d2ed0a101faa9a109a604ed49ce1825aa6816566
font_02_sfnt_off00011434.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11434 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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