Malicious PDF — malware analysis report

Static analysis result for SHA-256 1504b9b800c6c759…

MALICIOUS

PDF

104.1 KB Created: 2020-11-19 13:11:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 1a7a9fbab3dbab9be6aa5d24cae0a947 SHA-1: d7a51c9ea1b9f8a79e5a3a070c3c6fe3553d8218 SHA-256: 1504b9b800c6c75991a08b225611c52137d79b7e627316769c47fc31fbda2a9b
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 0.9996

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://traffine.ru/strik?utm_term=formas+de+valorizar+a+vida PDF link annotation
    • https://mesipaku.weebly.com/uploads/1/3/1/3/131383407/ziposad.pdfIn PDF document text
    • https://pezopipowom.weebly.com/uploads/1/3/1/4/131406060/6575944.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393639/normal_5fa56e2f43f8f.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/juzinaramip/kivevuzejiwunotinis.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/15043102801.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/allaitement_maternel_oms.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63a2102d-7bd5-423d-8a69-3ac10fbb11fb/81311815998.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/house_of_the_golden_cupids_pompeii.pdfIn PDF document text
    • https://s3.amazonaws.com/nabifovu/miperu.pdfIn PDF document text
    • https://s3.amazonaws.com/gadumagabusodel/dumusupukaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c329fa9-a805-4467-86ef-d5fccd2d2106/38041451444.pdfIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/blackbird_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/gewesalexomojafokufifo.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/passikudah_sri_lanka.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 2

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_off00015a67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15A67 5036 bytes
SHA-256: 4f73c14843d7ac85bb5320c240a3aea1d292778b89871a9031f88b3df7055600
font_01_sfnt_off00016b76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16B76 11736 bytes
SHA-256: fd92f2ccba75c80c6e4a1ae3ad838970a189fbc81d8db37544d1992b38e5856b

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