Malicious PDF — malware analysis report

Static analysis result for SHA-256 8950fc4ac49d68ed…

MALICIOUS

PDF

84.9 KB Created: 2021-03-22 13:32:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: b2e4caf43a128c9ebb715076b8edaa2a SHA-1: 2b447e9f50fe3f0c26df7db356bc6113b615beff SHA-256: 8950fc4ac49d68ed73796c56acbf298c1fde955f4248c84b9783eedd85023310
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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/strik?utm_term=what+is+my+native+american+animal+symbol PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4459328/normal_603c4a4629588.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379043/normal_6010c9dbd4d6f.pdfIn PDF document text
    • https://cdn.sqhk.co/tizudukokeni/jLxggja/spirit_halloween_altoona_pa_hours.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455886/normal_5fcaad5a17ce4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370285/normal_5fcd00d74e131.pdfIn PDF document text
    • http://batmbatm.ru/lopugulezolefupdd3w7.pdfIn PDF document text
    • http://tersq.space/86087231129v1qjs.pdfIn PDF document text
    • https://cdn.sqhk.co/tovipovo/fZj4Rid/pibus.pdfIn PDF document text
    • http://wow50.pro/ginajakibosrzfy3.pdfIn PDF document text
    • http://tertov.xyz/abhimaan_movie_fullneo2r.pdfIn PDF document text
    • http://sreview.online/adding_sheet_ks157x5k.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382405/normal_6043dc34c1bf9.pdfIn PDF document text
    • http://goodsfor.life/hot_water_diet_plan_for_weight_lossygg8q.pdfIn PDF document text
    • http://zeropium.com/27993309909b63eu.pdfIn PDF document text
    • https://cdn.sqhk.co/wevemugas/hahc7O3/ruvajakegatojifinufajisa.pdfIn PDF document text
    • https://cdn.sqhk.co/sosexazefip/dJ26jiD/how_to_get_assistive_touch_on_iphone_xr.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://68e1e3d4-268d-49bc-a8aa-b119cb10fea7.filesusr.com/ugd/3ceeb9_2152cb1dc19a448eb35849380dc24d46.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xelimewat/zaneb.pdfIn PDF document text
    • https://84daacc9-7e90-4c5d-b1ed-526950900c49.filesusr.com/ugd/73f3b0_ce7af40fe4fa489f9f61030ac41a1f11.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/cbse_school_affiliation_form.pdfIn PDF document text
    • https://6e8b94c7-278c-4a65-9c30-8d61c93a8f31.filesusr.com/ugd/9ff9b8_c74f8e7a1b934f88b58998e7925d496f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/64875128800.pdfIn PDF document text
    • https://2a983b51-2e13-4971-8c1f-a5bca3ab4353.filesusr.com/ugd/e1a791_7866d2af44094adebb10e5911bf8bd54.pdf?index=trueIn PDF document text
    • https://0f8fedcd-12c0-4678-86f8-e2bff7269121.filesusr.com/ugd/70e7d4_f82b8b595adf420d9428e6ff342f716a.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010dd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DD9 5356 bytes
SHA-256: c463b64a31babb1b4de5aa25cc0954a1b0f437241c97834e788917754d445efe
font_01_sfnt_off00011ff6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FF6 11280 bytes
SHA-256: bd32e791bb56456cecdd3a5d64d3f2a7395be8a5637972470ed86f12aeebd1c9

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