Malicious PDF — malware analysis report

Static analysis result for SHA-256 c78c1b2509611dc4…

MALICIOUS

PDF

69.2 KB Created: 2021-03-07 06:54:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 32569388343d40e3a4e735f6b606066a SHA-1: a95b26426db9dd4895321e2c284d4f7897be6844 SHA-256: c78c1b2509611dc46953d018607a4eb1ddff637e7254e29a3b0d593be2b1aa50
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many pointing to disposable domains or link farms, suggesting a phishing or malware distribution campaign. The presence of external URIs and the overall structure indicate an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xajibur.ru/wix?keyword=flor+de+lima+menu PDF link annotation
    • https://cdn.sqhk.co/jifonakilux/cjeEUNT/pabejiz.pdfIn PDF document text
    • http://soldatskaya6.ru/learn_korean_free_downloadcjq0v.pdfIn PDF document text
    • http://bilkan.fun/nokia_bootloader_apko9s9l.pdfIn PDF document text
    • https://cdn.sqhk.co/gatavazer/jgHMTey/93015096193.pdfIn PDF document text
    • http://ihsteam.ru/cloud_9_movie_castyz8jw.pdfIn PDF document text
    • http://mirumumavetifun.mypressonline.com/what_is_a_custodian_of_records_affidavit.pdfIn PDF document text
    • http://help-verification.com/laxijuvev1vqa4.pdfIn PDF document text
    • http://selectgetc.top/website_layout_template_illustratoraauki.pdfIn PDF document text
    • http://gukabibus.mygamesonline.org/fikinafokafufato.pdfIn PDF document text
    • http://levantemosaic.com/491927770768qk21.pdfIn PDF document text
    • http://jadogaxarabu.mygamesonline.org/power_cooker_plus_8_quart_pressure_cooker_recipes.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://0df6220b-9630-4647-aab6-0d9db69b9d59.filesusr.com/ugd/8b97dd_ee73d99b3a4f4c328696f3bfbdf49c41.pdf?index=trueIn PDF document text
    • https://f8071fb1-33dc-4bb9-9fe9-292e0ca0d861.filesusr.com/ugd/253000_6369ef297d5e4d5d831ef9081768b95f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/62198137357.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/74166744734.pdfIn PDF document text
    • https://b01cffea-7a05-49e8-9781-04202a21c04b.filesusr.com/ugd/d5d855_b250c2f7a5f0401fa7bde14427b8dc9a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lusabifef/tunonotatozu.pdfIn PDF document text
    • https://bf5f3f24-cfb9-4aec-9f01-83e6d863dc5b.filesusr.com/ugd/1f4526_ee45de59676b4fa588c6d0221b7b56a3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/palevijuj/jbl_xtreme_2_review_techradar.pdfIn PDF document text
    • http://womawujun.atwebpages.com/deadpool_comic_book_series.pdfIn PDF document text
    • https://1ebfeea1-7d02-43b8-8f0a-002c87bc7f75.filesusr.com/ugd/50dcf6_aeaf4ee07dd34406a471e95f05b6b4fb.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wujafivabipo/39324028343.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

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_off0000d465.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD465 4748 bytes
SHA-256: 6ad33bbb63a0d72016e3c449eee393875d5aa4f8b9ba1a332cd60cd84e0297fa
font_01_sfnt_off0000e46a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE46A 9848 bytes
SHA-256: b8e63f2aa2a6c9ed13fb46c090a50a3796882b8ec7c725daa77830e2fa019ee0

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