Malicious PDF — malware analysis report

Static analysis result for SHA-256 17103a2e7edeb462…

MALICIOUS

PDF

67.0 KB Created: 2020-11-11 19:41:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ade4c97479aa9e589c390433616abbc9 SHA-1: d27e68bd537aed4ec41acf173425cec91159ee3a SHA-256: 17103a2e7edeb462e1361ab964c1d685611d9953c7f402aae56ed6f51a22ffba
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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://traffset.ru/123?utm_term=guanimes+con+bacalao PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4376869/normal_5f9713b2741e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405903/normal_5f920f1566599.pdfIn PDF document text
    • https://vodiwisilob.weebly.com/uploads/1/3/2/6/132681054/6319445.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368244/normal_5f88c3d3abdcd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365608/normal_5f9aeea294128.pdfIn PDF document text
    • https://sefusozikoju.weebly.com/uploads/1/3/4/3/134366316/borenewuvuv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367650/normal_5f8e4b34c3ba8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465259/normal_5faad6e57e57f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dujepav/ap_calc_2013_free_response_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/jugawirozemurisa.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/unidad_3_leccion_2_reteaching_and_practice_answer_key_page_20.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/western_albemarle_high_school_crozet_va.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/word_with_ex.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/13140860462.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/gutijuson.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_off0000cb3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB3F 5020 bytes
SHA-256: 355851b093f06d4dbadf648f7f0cfbcaf95308b751531f3806461cafaf6c1e80
font_01_sfnt_off0000dc46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC46 10460 bytes
SHA-256: 5544b6239fa6de319c03a8784fbe224741eb21af14c89281bac212d8749e7e42

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