Malicious PDF — malware analysis report

Static analysis result for SHA-256 2407e2ec9194eb92…

MALICIOUS

PDF

73.8 KB Created: 2021-02-15 03:24:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 05bf0529af34ff800d82440aeeaebdfb SHA-1: 4e73a5b72a1b24b449e0c94e556d9b531338f60d SHA-256: 2407e2ec9194eb92247dea661bf1cd11759ad7dce7f0c29ad1d3274ed642c637
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jacksth.ru/wix?keyword=direct+payday+loan+lenders+no+third+party PDF link annotation
    • https://cdn.sqhk.co/savunowudob/idgciio/94834507285.pdfIn PDF document text
    • https://cdn.sqhk.co/jixuvepabu/sQvzhjJ/pinout_ipod_usb_cable.pdfIn PDF document text
    • https://ruvawuwejijexut.weebly.com/uploads/1/3/0/8/130814193/gufopopofa_denime_wadibamojifoji_zitagapamab.pdfIn PDF document text
    • http://fipirovivupaf.22web.org/76708285087.pdfIn PDF document text
    • https://silatasetexa.weebly.com/uploads/1/3/1/6/131637876/0fe903e8c632b0.pdfIn PDF document text
    • https://dorenezawux.weebly.com/uploads/1/3/5/3/135383086/siputuvepen.pdfIn PDF document text
    • https://vizijupazikek.weebly.com/uploads/1/3/2/8/132814338/4351608.pdfIn PDF document text
    • http://dosemamorozaj.22web.org/sfn_poster_guidelines_2019.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jigabez.epizy.com/14361552816.pdfIn PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/adobe_acrobat_standard_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/silubebebefuju/cnet_avast_internet_security.pdfIn PDF document text
    • http://menutewewunidov.rf.gd/livogamif.pdfIn PDF document text
    • https://s3.amazonaws.com/guvovigo/82906291848.pdfIn PDF document text
    • http://kimises.rf.gd/synonym_worksheet_for_grade_3.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/putoluxav.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4E5 5260 bytes
SHA-256: 1bf7df19d032cf021dd5846f70e1ca6dfbd69c7f324de3d2df657ec7dfc837f2
font_01_sfnt_off0000f6cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6CF 10396 bytes
SHA-256: 8791a9be2f85a95a164b4dccf2c32a6fb3e05e76f33d63493229fbb86636031e