Malicious PDF — malware analysis report

Static analysis result for SHA-256 04fb973292a29a70…

MALICIOUS

PDF

64.1 KB Created: 2021-03-24 22:17:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 2f4c6e8633125aa8cafed237daf9dd01 SHA-1: 0e789c2c7535f55b421d872ca88f05369d4bd254 SHA-256: 04fb973292a29a7045161f76ec58d9ed6af64d409b1123586443c021c1bab134
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple embedded URLs, with at least one identified as a malicious redirector. The document body, though truncated and obfuscated, contains text related to 'easy frp bypass free' and application metadata, suggesting a lure. The presence of numerous links on disposable hosting further supports a phishing or malware distribution scheme. No scripts were extracted, but the overall structure and URL analysis point to a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/123?utm_term=easy+frp+bypass+free In PDF document text
    • https://cdn-cms.f-static.net/uploads/4468820/normal_5fdb53fad0660.pdfIn PDF document text
    • http://tactical-jacket-sale.shop/how_to_holotropic_breathing_technique66bzf.pdfIn PDF document text
    • http://nnorm-id.com/voverigazoxarbhiz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494451/normal_60415451b5b26.pdfIn PDF document text
    • https://cdn.sqhk.co/gapalagabig/bmhduev/45433932776.pdfIn PDF document text
    • http://xviiivbgz.com/pizupametenulupafoxtxj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453908/normal_60184e8ce0b49.pdfIn PDF document text
    • http://vzroslyh.net/el_principito_love_quotesgj65e.pdfIn PDF document text
    • https://cdn.sqhk.co/wazikunal/jh1hcYX/tegetokamuz.pdfIn PDF document text
    • https://cdn.sqhk.co/sojuzafu/gqkYxiT/events_next_weekend_in_atlanta.pdfIn PDF document text
    • http://pochta-24.cc/wagesulopaju8fuw.pdfIn PDF document text
    • http://prizyivnik.ru/what_is_an_adverse_opiniontp9i1.pdfIn PDF document text
    • http://8bitbeardsco.com/construct_2_full_free_downloadb9oqo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://98e80eac-0673-4bf9-a3de-4132461903b3.filesusr.com/ugd/1acd69_4333465836004233a0f37925a8988079.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/4916744003.pdfIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/12786577742.pdfIn PDF document text
    • https://f3dbd103-cf2f-44fc-b0ad-c9004dc38af2.filesusr.com/ugd/1f2646_3797c8031be5475f89ca5f41753da60a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/senodiw/wilogupaferi.pdfIn PDF document text
    • https://16e729f2-8c5c-4787-b670-14aeba6c5e03.filesusr.com/ugd/ac55e2_ee277652b92a4ae5867e6cd7d60b025a.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c19d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC19D 5060 bytes
SHA-256: ab846b19b661c57c13fd53f6bbf5b4baf7f1b980123f4d824bdcdb25811d4651
font_01_sfnt_off0000d2e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2E9 9588 bytes
SHA-256: 09e59da095dc975c112e2c0023b349630ca49b616b80eb144df31bb75834556f

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