Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a84af43bf2bba9f…

MALICIOUS

PDF

69.0 KB Created: 2021-01-28 14:02:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 54a59b4ddf85baa9897214b8354d1f82 SHA-1: 9bf6a1e2dfed8a6d53d99950e52ad4d4be18f6b2 SHA-256: 5a84af43bf2bba9fe835a9ed1e09c222982953431fe7664ecc9e3eefc258a67e
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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 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://crophysi.ru/wb?keyword=spin%20blade%20metal%20fight%20burst%202%20english In PDF document text
    • https://static.s123-cdn-static.com/uploads/4374698/normal_5ff7e3aa9117a.pdfIn PDF document text
    • http://my-favshop.online/melody_thomas_scott_childrenq70jx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376879/normal_5fe9e7834372a.pdfIn PDF document text
    • https://paweweribawu.weebly.com/uploads/1/3/4/6/134656346/lonadafelutewo-bimape-jagigofasiv.pdfIn PDF document text
    • https://regafuraseni.weebly.com/uploads/1/3/4/6/134663643/e78bf73.pdfIn PDF document text
    • http://cosmicgig.com/word_cookies_cheats_daily_puzzle_2020g7l3x.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405654/normal_60098cf776bef.pdfIn PDF document text
    • http://erkutungotu.com/lepadafefanuwukamidipolac5ee3.pdfIn PDF document text
    • http://acupofjacob.com/3d_bass_piya_dj_mix_mp3_song_download5dqq9.pdfIn PDF document text
    • http://vezerfa.xyz/lotakopezinalotiwopabupoc800j.pdfIn PDF document text
    • https://tagekoworiz.weebly.com/uploads/1/3/4/0/134016686/wajerofexagak.pdfIn PDF document text
    • https://bopexetijajab.weebly.com/uploads/1/3/1/4/131411078/e71f819626.pdfIn PDF document text
    • http://titanof-filtr.ru/6413609054shpz3.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/sojuravewi/breach_and_clear_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/liluvad/childish_reverie_font.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_off0000cf38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF38 5832 bytes
SHA-256: e2db36bf8a7052913f868d7c94272488c738778bb82023f4e4a3a9adba46788d
font_01_sfnt_off0000e2db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2DB 10748 bytes
SHA-256: 9c02a0c18fd16273afc40df5fdc1cece35989ba1969e83e866a4eaf1afad5ad1