Malicious PDF — malware analysis report

Static analysis result for SHA-256 c970c8126d02727f…

MALICIOUS

PDF

75.0 KB Created: 2021-01-26 06:46:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: f71d61bbd2254a668e30bc605818d28a SHA-1: f04adf43ef4e42cd1b36e785b55385073ce75b96 SHA-256: c970c8126d02727fad28a2ae5e74c784c8433bc9217268ee7920aa9ec625af00
184 Risk Score

Malware Insights

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

The PDF contains embedded URLs that point to known malicious redirectors and a link farm hosted on disposable infrastructure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect the user to malicious content.

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://traffine.ru/123?utm_term=your+vs+you%2527re+worksheet+pdf In PDF document text
    • https://cdn.sqhk.co/doxowite/ijgtQIo/24631643017.pdfIn PDF document text
    • https://jegobagugixados.weebly.com/uploads/1/3/4/8/134858953/nonud.pdfIn PDF document text
    • http://begetus11ppz.xyz/machine_gun_kelly_merch_delayumrwz.pdfIn PDF document text
    • http://iqecoportal.ru/66177193819bn9fg.pdfIn PDF document text
    • http://antonioit.space/fasuvokagokagagukay59a8.pdfIn PDF document text
    • http://cheatyou.site/6418782026xip60.pdfIn PDF document text
    • http://regsen.website/telugu_movie_quiz_questions_and_answers_2016p9q4h.pdfIn PDF document text
    • http://belkwigs.com/midigumusazodoxuboxajamepmg19e.pdfIn PDF document text
    • https://gegoviboz.weebly.com/uploads/1/3/4/8/134876631/62671.pdfIn PDF document text
    • http://mini-cam-v2.club/vodafuboniduruz9ul5o.pdfIn PDF document text
    • https://pazunorafozide.weebly.com/uploads/1/3/0/7/130776571/tiraweti_gozamazozevoli_tovuvag_mepakoxik.pdfIn PDF document text
    • https://vutajavegev.weebly.com/uploads/1/3/4/0/134040502/67b4e9d556.pdfIn PDF document text
    • https://somotudodij.weebly.com/uploads/1/3/4/6/134699902/7776993.pdfIn PDF document text
    • http://private-channel.site/139886496158rdhb.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/zafibimutadoti/1411596213.pdfIn PDF document text
    • https://s3.amazonaws.com/taturi/creative_writing_workshop_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/nisekoi_live_action_sub_indo.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_off0000dc7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC7C 4928 bytes
SHA-256: 6842b29030621e82d5d9ab40815f16cea4e9ab164714156795b5043020e3c9cb
font_01_sfnt_off0000ed7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED7E 10388 bytes
SHA-256: a95d55729e37536cde64c08b41ec7cebb617a139b3ff3413ce35d5cdb283fa7c
font_02_sfnt_off00011118.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11118 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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