Malicious PDF — malware analysis report

Static analysis result for SHA-256 60edad050743c0d2…

MALICIOUS

PDF

78.5 KB Created: 2021-03-29 01:25:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 4f54b571350d38455221b036d71dc9f1 SHA-1: 580c6b5c1a8eaa498da9bb33d81662345ba5a179 SHA-256: 60edad050743c0d2774f3f0674d9aed4e80630f19ef4120971c2ee9cc0dc05e5
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many of which point to disposable hosting and are part of a link farm, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though heavily obfuscated, contains text related to 'Gossip Girl season 5 episode 5 watch', serving as a lure to encourage users to click on the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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://jacksth.ru/wix?keyword=gossip+girl+season+5+episode+5+watch PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4418755/normal_6032e78154499.pdfIn PDF document text
    • http://zahlungsservice-ch.site/cash_app_merchant_refund_numberbpy1p.pdfIn PDF document text
    • http://letgtma.bid/top_paw_36_folding_crate_instructionsxubi6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383451/normal_6057a0e1ba2eb.pdfIn PDF document text
    • http://bluetea.space/diferencia_entre_complement_predicatiu_i_circumstancial1akar.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474739/normal_5ff4e2236b8ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365626/normal_600de8169625e.pdfIn PDF document text
    • http://bettyloustintruckbbq.com/jajefaxiridevavosupuv0v2s.pdfIn PDF document text
    • http://copyrightviolationcenters.com/voucher_formativi_regione_toscana_under_4007kpf.pdfIn PDF document text
    • http://praktika-ingenieur.com/pabufemerunetebudezirob2xnon.pdfIn PDF document text
    • http://kushtanash.ru/61674397122707su.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380527/normal_5ff0df41b1413.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/vebenok/zetenaburakixasogufen.pdfIn PDF document text
    • https://s3.amazonaws.com/lorerexeg/tevoxigipegogoto.pdfIn PDF document text
    • https://s3.amazonaws.com/woxotopapozokev/android_apps_free_video.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/niberadaguzimu.pdfIn PDF document text
    • https://486a928f-df87-4682-b39c-9199637d78f9.filesusr.com/ugd/982a49_ef63ca5d2b174e70ac03f1756a5bea0a.pdf?index=trueIn PDF document text
    • https://e25b7b56-d8f7-44cb-9276-56428e53d1cc.filesusr.com/ugd/63f3e8_010cf421ba8543da81b316fc79f536fd.pdf?index=trueIn PDF document text
    • https://c31d65df-273c-4bcc-acfb-7b03b0724b99.filesusr.com/ugd/e7e4a0_509a722ff1e24fe1ab42c774ef07c023.pdf?index=trueIn PDF document text
    • https://5e9c932d-19a8-4d5a-a970-d4bc0bcb832b.filesusr.com/ugd/bae0a0_1520dcb9c7b748d1836f8a2ef5e93dc1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/does_swing_caddie_work_with_foam_balls.pdfIn PDF document text
    • https://7afd96e6-4611-46d4-9b98-d111b897c281.filesusr.com/ugd/154221_4379af4f27144ec59b4f41cc2def48b0.pdf?index=trueIn 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_off0000f295.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF295 5580 bytes
SHA-256: 7e8c5f577310f4e8b0cdf3594fb32e5364792aee11ddff5705e8f2732d102d3f
font_01_sfnt_off0001059f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1059F 11664 bytes
SHA-256: 0dc7f6b1dd98473aed59f973f486fe7c1431ae7e4826ab7809fec7fc8f160338

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