Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd85fe22eadfbb11…

MALICIOUS

PDF

71.9 KB Created: 2021-03-04 22:08:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 243127884ade11fd9063ff057ebd40b5 SHA-1: 9a91c460de8071993d524f1396b57a73ef965d39 SHA-256: cd85fe22eadfbb119a05354cc06c2b3bc54e0aa26c9aa1c8cf82dcaaefc7643f
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://mezovuduw.ru/award?keyword=how+to+set+my+adt+alarm+to+away PDF link annotation
    • https://fuxiwajusefu.weebly.com/uploads/1/3/4/6/134617271/rupibewadiriwiz-maves.pdfIn PDF document text
    • https://bokuwiziwa.weebly.com/uploads/1/3/4/0/134042705/faninemofed_livuj.pdfIn PDF document text
    • http://onkoprofi.ru/kumonadovuforudiuba7w.pdfIn PDF document text
    • http://pitushok.fun/540390112995pjlt.pdfIn PDF document text
    • http://mysteps.online/7881344300hinu7.pdfIn PDF document text
    • https://fufirixosidewo.weebly.com/uploads/1/3/4/8/134868093/detigegezonot.pdfIn PDF document text
    • https://kaledawuvilef.weebly.com/uploads/1/3/4/7/134727412/worawaz_nomerirob.pdfIn PDF document text
    • https://keziputaxa.weebly.com/uploads/1/3/2/7/132711938/karubodeponifedov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418170/normal_603b997627c94.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490141/normal_5fffd6a1a008a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387229/normal_5ff9190eb1943.pdfIn PDF document text
    • http://goproonly.com/how_to_replace_burner_igniter_on_kenmore_stovecyv8i.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413968/normal_600d319a8acd1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416149/normal_60071334b0a3a.pdfIn PDF document text
    • https://poxapoxidofex.weebly.com/uploads/1/3/4/0/134016688/benupokijek.pdfIn PDF document text
    • https://zavegaligap.weebly.com/uploads/1/3/4/4/134499553/59efd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/meludav/chronicles_of_narnia_1_movie_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kukupunopedon/34178132492.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/87251923316.pdfIn PDF document text
    • https://s3.amazonaws.com/nuruvapozixix/auto_clicker_murgee.pdfIn PDF document text
    • https://s3.amazonaws.com/petubapizo/86643397360.pdfIn PDF document text
    • https://s3.amazonaws.com/runuzitexokol/mofagaritazepikok.pdfIn PDF document text
    • https://s3.amazonaws.com/nevowimo/32095332805.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/3177333293.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_off0000de41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE41 5128 bytes
SHA-256: 67b3fab93d981805547f6d5d5267522c8b1508a4f658556be990720b6fc673a2
font_01_sfnt_off0000efa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA9 10032 bytes
SHA-256: 5d6aacd744489ce26e8d94e96efdbf03b80762e9047bb0a295485d80db78c220

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