Malicious PDF — malware analysis report

Static analysis result for SHA-256 19827a91e12581a8…

MALICIOUS

PDF

76.8 KB Created: 2021-03-28 11:27:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 694f31e223c66ccb0be740d24067efb0 SHA-1: d5178cd542ff4c54560eb28708f461385ffe64af SHA-256: 19827a91e12581a82bdcb0831bc9309c68e90e3d5599ed90011e6d6f28f06e8c
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one prominent URL suggesting a lure for a movie. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of external URIs and a link farm heuristic further supports a phishing or malware distribution scheme.

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://jumiwimov.ru/123?utm_term=chinatown+hollywood+full+movie++in+hd PDF link annotation
    • http://dvertsoff.ru/aggiornare_app_android_tvon0jo.pdfIn PDF document text
    • http://vvinorama.fun/how_to_activate_poll_everywhere_in_powerpointvvinz.pdfIn PDF document text
    • http://ximasoj.22web.org/vawesafowi.pdfIn PDF document text
    • http://drovazvenigorod.ru/ffxiv_mining_leveling_guide_50-60e7g2a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://jefesipi.rf.gd/latogemekokarixanu.pdfIn PDF document text
    • http://detapiraxexe.epizy.com/tarot_spreads_for_shadow_work.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61eeca0d-88ae-4253-9ab1-8deb070815a8/povotiwumerasamok.pdfIn PDF document text
    • https://010f2e21-25ca-4560-806d-08cbbb7c7db1.filesusr.com/ugd/74a852_a11cc1d00e4c4ea7b0bca1f6d705b7fa.pdf?index=trueIn PDF document text
    • https://926da24b-d3df-4aea-ac1b-ebdf7359a9e7.filesusr.com/ugd/fef925_2dea0f39cd654e04a33462d4d1a65fc6.pdf?index=trueIn PDF document text
    • https://2987c0f4-171e-4473-b3f1-a5468658115b.filesusr.com/ugd/75ff8a_8ebee166162d44a391d85512cca12539.pdf?index=trueIn PDF document text
    • https://b70645e9-42d7-44c6-80f2-f165c8819e8d.filesusr.com/ugd/3f1130_bced6efc02e245ae9366cebf04e80990.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nuvukivaxiren/79588679878.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/google_data_studio_report_templates.pdfIn PDF document text
    • http://koburolamugalo.rf.gd/bleacher_report_app_state.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2060b162-d9ce-44ab-a547-396ce00708eb/48408370096.pdfIn PDF document text
    • https://a1104102-e7f7-498f-9db5-fd16eb5a1c84.filesusr.com/ugd/3f19aa_d4666cd288994f7cb1e80a74f9371190.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cfc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFC1 4240 bytes
SHA-256: 2d79c371f166044d0de1a5a12c0de168758589db7898542d7935f034322014a6
font_01_sfnt_off0000deb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEB2 5032 bytes
SHA-256: 4a677a5b2b79cdc73222ca3396850b4c3d62feeb40eceecb200da7ce3b838914
font_02_sfnt_off0000efcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFCC 11228 bytes
SHA-256: be9916503345d37eea52bfe3e23a6366944eb1874378a9c8a80efd6f7c1de5a8
font_03_sfnt_off0001165f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1165F 4076 bytes
SHA-256: f29923bd64bb6e5083e6cd71cea7a2f6b77f2f000db75f73d3dfed32d0b95d96

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