Malicious PDF — malware analysis report

Static analysis result for SHA-256 46b847198de23ea4…

MALICIOUS

PDF

77.7 KB Created: 2021-03-17 13:47:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 50cb8928998c14c929fbcfaf229e10ef SHA-1: 72420170ab7a477c0fe625218edc85ebb5087e10 SHA-256: 46b847198de23ea46e1d79f167604784a53fdb67cea00edefa9a6ce8bdd306ba
196 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics, including a critical ClamAV detection and an ML classifier. It contains a large number of external links, suggesting a link farm or phishing attempt. The presence of a 'Password-protected archive handoff' heuristic indicates a common tactic to bypass gateway security by encrypting a payload. No scripts were extracted, but the overall structure and heuristics point to a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://dafemum.ru/123?utm_term=clean+sheet+meaning+etymology
    • https://nolilozeto.weebly.com/uploads/1/3/5/9/135957670/wugegina.pdf
    • https://cdn.sqhk.co/bitowiso/iaGvHje/mlb_playoffs_2020_schedule.pdf
    • https://cdn.sqhk.co/xovepejegosi/1shfdM6/draughtsmanship_definition_synonyms.pdf
    • https://cdn.sqhk.co/bemememu/ath59je/dig_deep_volleyball_tryout_results.pdf
    • https://cdn.sqhk.co/xawobovuji/IHMgfgj/kosewuz.pdf
    • https://cdn.sqhk.co/besogevipadi/ihidxjh/32831470429.pdf
    • https://cdn.sqhk.co/vonirosidejo/iVHGSij/hifu_hello_body_reviews.pdf
    • https://cdn.sqhk.co/tujarazimok/icm6hbp/rings_a_bell_meaning_synonym.pdf
    • https://cdn.sqhk.co/limexofure/0shaQhj/63011075631.pdf
    • https://rilulozopofebu.weebly.com/uploads/1/3/1/4/131406258/397d5ef66.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://7be326e9-a1fd-4761-a84c-83c904220737.filesusr.com/ugd/37e945_613cc36b2d97407596345b862836f7dc.pdf?index=true
    • https://d848e4b6-662b-4424-a759-963270729452.filesusr.com/ugd/30e015_87947e96526449a18265cd5ce51b85be.pdf?index=true
    • https://aa514bbb-a96e-4bc9-8ff3-0ca2edd1104f.filesusr.com/ugd/3fc21f_6fd7a7b6043f41739ff17c14d0a804c2.pdf?index=true
    • http://nivadekobon.epizy.com/nonazezokawerovesulak.pdf
    • https://4abf464d-34d5-4c80-8de5-e64f30e04530.filesusr.com/ugd/8b3eb5_89a91440fc1f4f1c8cf116f7436b3114.pdf?index=true
    • https://45180a89-8b92-4d54-a4c6-cdf0ad6af3c7.filesusr.com/ugd/2b98a3_2e84bba216c148b89bb845e91901f678.pdf?index=true
    • https://5e3b32e6-a537-4a58-a531-ef303a468713.filesusr.com/ugd/120874_104f19bed96047e59ed02da00d8c1dfc.pdf?index=true
    • https://fac30f9c-1bc3-4ff6-ac40-7ced1d2a170b.filesusr.com/ugd/3b7182_3929e95720884fc4888a47cd02215140.pdf?index=true
    • https://2a07c75e-e898-48ba-b326-4cccc82d0599.filesusr.com/ugd/ff154e_f63bb3897b004531a9213c884d024ebe.pdf?index=true
    • https://601bead5-a720-4f65-98db-62fe2a42cb91.filesusr.com/ugd/0e52b4_58ce167345b147a5baa4c7a6cbedfd77.pdf?index=true
    • https://4eb3a9b5-ca6a-4b2a-896e-878abc754f3b.filesusr.com/ugd/f1ab86_27db22360f6e4502902ec7b683cffab0.pdf?index=true
    • http://budakokubogomax.rf.gd/italian_language_learning_books_free_download.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0d5.bin
3c7a2a1e080c30bf4417e5df2bb232343809ef323783b446b0a18a9367f63504		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D5 5012 bytes
font_01_sfnt_off000101c1.bin
8e2f2a5ed0007a05c1134d47313168fd06c9cfdb0a0e9d7d9e15c6fe2ee5091f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101C1 12396 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.