Malicious PDF — malware analysis report

Static analysis result for SHA-256 1de6717c4c8398cd…

MALICIOUS

PDF

67.3 KB Created: 2020-12-16 23:46:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 860e2cb91512ea8c66304b68af1ccf86 SHA-1: d9ef4236ff4026ae6e6d4a05a14ba874baec5bdb SHA-256: 1de6717c4c8398cd38d9991292cde95547cb06c121cf172335d99a6a78c4f48d
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=ghost+by+jason+reynolds+questions+and+answers PDF link annotation
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/xereromejiv-koxozirusoror-moxonujis.pdfIn PDF document text
    • https://redunexodozik.weebly.com/uploads/1/3/0/8/130814050/8351954.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370052/normal_5faadb378912b.pdfIn PDF document text
    • https://finiluxexolije.weebly.com/uploads/1/3/1/8/131856594/bb87f32975070a8.pdfIn PDF document text
    • https://nosuzodudoj.weebly.com/uploads/1/3/4/5/134588086/2368047.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468827/normal_5fbf58f27995b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc54bccab79f442f2469dcf/t/5fcef1e21a78ee5f015a6df7/1607397858446/alien_warfare_cast.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/397c33a0-a7d6-43e6-9944-4793e22cdd22/98677649518.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdddfb05-b9ed-47d1-a811-2ef6b43b525c/15034571884.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49e55a28-2caa-42ab-9f31-88f40055f3ba/ruvawopafe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5ae8c2c-8df6-45c1-a9c2-65b5cc4d97c6/happy_diwali_gif_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c482c653-c9b3-4379-9975-b985013a557d/vipalo.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_off0000c9cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9CD 5480 bytes
SHA-256: 7a0c371f1ed15b221d2a5840b566b4da417e21b28c9b94c48c06d8187bbaf23e
font_01_sfnt_off0000dc76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC76 10572 bytes
SHA-256: 41c262775838bc4d74c1471ddf8d8a4c6130961e8a19692104423c9b2e8f8be6

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