Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5b26503a266e8cd…

MALICIOUS

PDF

67.9 KB Created: 2020-12-16 02:20:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 19e07bd193c8ede68b25e71e8154f19e SHA-1: fec1824c48acc3468165feb19d9d4b31aca9436b SHA-256: e5b26503a266e8cd79416b4a274023bdf93758407d31e3aa10610aa7986ed46a
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://gettraff.ru/123?utm_term=playview+apk+pc In PDF document text
    • https://noverike.weebly.com/uploads/1/3/4/3/134349253/ea6a286e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469386/normal_5fb03b895c2ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385631/normal_5f8c70e591844.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488815/normal_5fc73141310fd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385021/normal_5fc49f43e88c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446759/normal_5f9e92002e55a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368500/normal_5f8d4f398f6fe.pdfIn PDF document text
    • https://lamosovi.weebly.com/uploads/1/3/4/6/134600354/bdfa092e169.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421478/normal_5fd0d3e8a2ee3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384647/normal_5f96f498c7a8f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406497/normal_5fb5d03742304.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367947/normal_5f8a725d70701.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374379/normal_5f8964b889a54.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/5fc7a4fa8c9e503d27aafc69/t/5fc89fde970db930d9c568c9/1606983647603/voice_access_apk_download_apkpure.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc54079ea4a794d5661c0f1/t/5fd1627e7cf94534dc4da91b/1607557759422/77746332778.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cec7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEC7 4972 bytes
SHA-256: d1a66da710c5923a786379bd495eb4175a592eced78ff7a02ddbe1582cf5cc3d
font_01_sfnt_off0000dfe8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFE8 10548 bytes
SHA-256: ee07aadecc5e63c8c3358fc0a0325db968885d2952cc9335b42fca5ea78f9e27

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