Malicious PDF — malware analysis report

Static analysis result for SHA-256 22fbb032d48c57d8…

MALICIOUS

PDF

68.3 KB Created: 2021-03-04 04:59:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e5951a0bf99a24f5e125b03f17087b72 SHA-1: c46587278948fd7bfe33edbac7f85f6fa3553e64 SHA-256: 22fbb032d48c57d84ff9c4b1e8fb1675ad7e5abeac1c09577c754cdc66ae7a65
244 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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.
  • 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://dafemum.ru/award?keyword=sub+zero+650%252F0+manual In PDF document text
    • https://cdn.sqhk.co/molivovuki/ogfijgc/sokezepadesotokogufe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417213/normal_6017a82570b96.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494681/normal_5fe7ee88bde13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485152/normal_601e3f1f37d19.pdfIn PDF document text
    • https://cdn.sqhk.co/vozupowo/3hjjccn/6774154687.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379380/normal_6025a6cd2b886.pdfIn PDF document text
    • http://xovuwut.iblogger.org/banaganizox.pdfIn PDF document text
    • https://cdn.sqhk.co/wavudasawete/K9jgM5P/ten_thousand_dice_game_scoring.pdfIn PDF document text
    • https://nezasitize.weebly.com/uploads/1/3/5/3/135303973/adc890490795a0.pdfIn PDF document text
    • https://voperupazekeko.weebly.com/uploads/1/3/4/5/134505312/ponilawep-muxise-zodubijato.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499653/normal_603805db65c49.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485443/normal_60125d4c7ed63.pdfIn PDF document text
    • https://cdn.sqhk.co/raxavetaletu/PU1Iijw/63180604565.pdfIn PDF document text
    • https://sipexagugiresu.weebly.com/uploads/1/3/4/6/134607427/xewumurusojexoziru.pdfIn PDF document text
    • https://pedesidava.weebly.com/uploads/1/3/4/3/134355179/8818781.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482418/normal_5fd1df2f8f50d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://zuvidatar.rf.gd/91492123414.pdfIn PDF document text
    • http://roragopijejem.epizy.com/bertinet_dough.pdfIn PDF document text
    • https://s3.amazonaws.com/nakuzafol/xupadokonuloverat.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c2e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2E0 5156 bytes
SHA-256: 096c5ce08591c8b0d0d8ca26608d0ea89f86f9d2abe957f254068523668596c9
font_01_sfnt_off0000d44a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD44A 9948 bytes
SHA-256: a9782418393b9111eadf709cd69153356b1ac307ed9721b2ef763b6394a5d449
font_02_sfnt_off0000f63d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF63D 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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