Malicious PDF — malware analysis report

Static analysis result for SHA-256 07c314db05cb0e5c…

MALICIOUS

PDF

77.3 KB Created: 2021-01-01 04:07:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: d6e0935a7ca0b8a18546e6a57e0641ef SHA-1: bdb141a9e9c510aa26da1e0e3b1b6658a4bae5bc SHA-256: 07c314db05cb0e5c559756e7095cda947680551d9698706be8c733557159830d
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm, with the primary URL pointing to a suspicious domain. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the PDF structure and embedded URIs suggest an attempt to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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://trafffi.ru/strik?utm_term=cannonball+jellyfish+florida PDF link annotation
    • https://cdn.sqhk.co/kibizatududo/Gjbhge5/2667730117.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxisilogok/AuvjeRy/riptide_gp2_free_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/purovufizu/idvihBX/dotafulibem.pdfIn PDF document text
    • https://tetekejitinile.weebly.com/uploads/1/3/4/5/134584465/955ddbc8c2ad1.pdfIn PDF document text
    • https://cdn.sqhk.co/mujekesire/3sifK2s/wafonadi.pdfIn PDF document text
    • https://fofunefiwipap.weebly.com/uploads/1/3/1/3/131384211/f48d8.pdfIn PDF document text
    • https://cdn.sqhk.co/reserujaj/Sifijty/birdy_grey_dress_sizing.pdfIn PDF document text
    • https://jesasifewom.weebly.com/uploads/1/3/1/4/131453969/butalusagu.pdfIn PDF document text
    • https://xexemisekugo.weebly.com/uploads/1/3/4/6/134679242/ledab-bumemafunuwar.pdfIn PDF document text
    • https://cdn.sqhk.co/koxajavu/nhdHThf/jezubeladuzixapovunizasu.pdfIn PDF document text
    • https://cdn.sqhk.co/jedelamodafa/fgiU7Tg/crash_dive_apk_mod.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
    • https://s3.amazonaws.com/wavunot/segundo_viaje_de_cristobal_colon.pdfIn PDF document text
    • https://s3.amazonaws.com/pujinit/30132311001.pdfIn PDF document text
    • https://s3.amazonaws.com/sasufufa/95359864499.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/fameletovomolufisunuzav.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e46d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE46D 5044 bytes
SHA-256: a9f51bbe19dadeed5228dc61541f82af4ba0c2a77e5f65ae08206125b353d54a
font_01_sfnt_off0000f58f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF58F 10624 bytes
SHA-256: 5733b4a30085bd3409fd2a0ec9d27c3d6322e8f231f105f960fff29147f0e828
font_02_sfnt_off000119e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119E6 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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