Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9aabad8503e9dcb…

MALICIOUS

PDF

68.6 KB Created: 2020-12-19 00:39:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 9c6861cea62863a8a7b5ce8e213c1b3c SHA-1: 9c5ca7c3806381a92cbacf4aee5b4de65749de48 SHA-256: f9aabad8503e9dcb2539e06d074dc8140c1321d288443f4f1af4d309d4bda46c
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 0.9997

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://trafficel.ru/aws?utm_term=definition+of+astral+form PDF link annotation
    • https://lalidusuferub.weebly.com/uploads/1/3/4/4/134440540/gazip-zenezirajiparo-sikilavutofoki-lefonulotiguse.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493541/normal_5fcbbbe23012d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365607/normal_5f87f2fc8746f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383156/normal_5f9056610171f.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/gavobawum/tutifalemegiwevalelamev.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdc9c274a508b35dd5dc321/t/5fdd20d1500a3c53d1a88525/1608327378213/classroom_cartoon_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dalava/8765455657.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/dominions_4_forging_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2d9348ef7301f8b1d7a62/t/5fc7f0c180e10a08e14bb0ba/1606938818971/89233624402.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/jajobagegoduvojipojasovik.pdfIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/werewolf_transformation_harry_potter.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/xemer.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dd9fec917750a3d7b949/t/5fc13f806457125654696d93/1606500227172/jawevipisotudodubusodefe.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 1

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_off0000d1de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1DE 4912 bytes
SHA-256: de264da805b81b001e6b35e554822aa0176218ac3a5d06382f60369a60299213
font_01_sfnt_off0000e285.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE285 10448 bytes
SHA-256: b65a9eec226169f2fe6095858e012e54d3d5a458218b85b1acb1958dd2004110

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