Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ccc0830dd189c73…

MALICIOUS

PDF

69.4 KB Created: 2020-12-03 14:02:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 31ed2a1f35c2bb7457f744a821a58996 SHA-1: 974832e6d81a1523c8f148fc29ae419f67b750af SHA-256: 4ccc0830dd189c739f27e3044986116688f5a3a5fa890b5e0581c2de1126a1d4
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://traffset.ru/123?utm_term=espn+baseball+arcade PDF link annotation
    • https://zipibolusoxa.weebly.com/uploads/1/3/4/6/134627603/1118247.pdfIn PDF document text
    • https://wuvukimepegoj.weebly.com/uploads/1/3/4/6/134694914/7352428.pdfIn PDF document text
    • https://fakimodixoto.weebly.com/uploads/1/3/0/7/130739088/zolisevegumadop.pdfIn PDF document text
    • https://mijisurux.weebly.com/uploads/1/3/1/0/131070147/3053479.pdfIn PDF document text
    • https://figapizezedop.weebly.com/uploads/1/3/4/3/134364787/zulelawenoxivupezor.pdfIn PDF document text
    • https://vasegalewi.weebly.com/uploads/1/3/4/5/134595350/lukaxepewowesew.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459917/normal_5fa7073a5b982.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://static1.squarespace.com/static/5fc59b4fbdb33045eee230e9/t/5fc86af590a4f8549d782e00/1606970103017/fusaxepidejotivo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1841dbd14ff0dd2a1095f/t/5fc7b6060791337046ef3f9f/1606923782562/52897265702.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1050bab79f442f22a407f/t/5fc56328fa04221c71d4c00a/1606771498491/21242496591.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf49d73c02f22b9d036140/1606371799585/adulthood_and_aging_mason.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/48995531957.pdfIn PDF document text
    • https://s3.amazonaws.com/jidosatikim/kefesosera.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf80268bfc51861676584/1606219779311/navy_njrotc_uniform.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_off0000c631.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC631 4712 bytes
SHA-256: d4409f0c59049fb2e9472ead6cb7f9b8826aaae033607d77ddd663f59d84ea4b
font_01_sfnt_off0000d622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD622 10744 bytes
SHA-256: edf9fdeec7beef3363028fe75d5d95b43f6d416152f9c423c5daf4fcd9e9b627
font_02_sfnt_off0000faac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAAC 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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