Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae35ed48ee7500b0…

MALICIOUS

PDF

75.2 KB Created: 2021-03-01 11:13:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: ffcd3fd49ccb749a9fe8f8c487a61de9 SHA-1: 8ea4bacb4064874fe6b4da588e2798b0c7d7220c SHA-256: ae35ed48ee7500b0e23b8137de1d21902a8adf72b96181d209da68bd8a62c06d
126 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous embedded URLs, many of which point to disposable hosting or link farms, suggesting a phishing lure. The document body, though heavily obfuscated, appears to be a lure related to a movie trailer, likely intended to trick users into visiting one of the embedded malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://fokemale.ru/123?utm_term=romeo+y+julieta+1996+trailer PDF link annotation
    • https://naziwimirup.weebly.com/uploads/1/3/4/3/134371197/fenudibotuzad.pdfIn PDF document text
    • http://fashion-deals.xyz/nofadatudumukasolabet44uuz.pdfIn PDF document text
    • https://cdn.sqhk.co/sategexarom/0nhiGqn/lil_yachty_freestyle_go_crazy.pdfIn PDF document text
    • http://matteset-spon.space/dejagubifebidudysolx.pdfIn PDF document text
    • https://cdn.sqhk.co/winelolibug/hbggha6/14181041130.pdfIn PDF document text
    • https://dexapapasogixeb.weebly.com/uploads/1/3/1/3/131384013/wigiw.pdfIn PDF document text
    • http://xakerof.22web.org/79040072942.pdfIn PDF document text
    • http://copyrightsupportforlnstagram.com/automate_android_app_exampleso2r2m.pdfIn PDF document text
    • http://xafubodefejazin.22web.org/hp_elitebook_8570p_core_i5_3rd_generation_price_in_pakistan.pdfIn PDF document text
    • https://dapapakutuluj.weebly.com/uploads/1/3/1/3/131384169/88736b8eb5.pdfIn PDF document text
    • https://wixepivod.weebly.com/uploads/1/3/0/7/130775856/bevepokuvabifir.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://rosuwofa.rf.gd/guardian_rugby_team_guide.pdfIn PDF document text
    • http://jometuxinuvalal.epizy.com/nice_guidelines_ruptured_ectopic_pregnancy.pdfIn PDF document text
    • http://kirizureme.rf.gd/61280233571.pdfIn PDF document text
    • http://zopegekole.rf.gd/puzirepakefozijopeso.pdfIn PDF document text
    • http://zulejanafub.rf.gd/98743803302.pdfIn PDF document text
    • http://nirutavikuda.epizy.com/telecharger_ps4_emulator_android_apk.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_off0000dab1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAB1 4976 bytes
SHA-256: 41d584ea9d0e98215815562e60e9a0dc63230ea4246d51ad88a8163ef78c3222
font_01_sfnt_off0000ebb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB4 10804 bytes
SHA-256: 875ff16b96f4a0359e1c269ad08c88d007cf8734410936d9b6aa06192f79aeb3
font_02_sfnt_off00011048.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11048 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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