Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbeed9332233883d…

MALICIOUS

PDF

73.5 KB Created: 2021-06-14 18:03:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 147b574d905ff1a11b244715fa79d8dc SHA-1: cc7256c35d852be381d2b9b54ad2d520e62e92a9 SHA-256: bbeed9332233883d35ab61705687fbf8b3ec3f3be052e3a5f2f0e4b9aeb0cfd9
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a significant number of external links, identified as a link farm, pointing to various disposable hosting sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or SEO spam. The embedded URL 'https://drafthe.ru/pbw?utm_term=slugterra+dark+water+game+download' suggests a lure to a specific game download, which is a common tactic for phishing or malware distribution.

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://drafthe.ru/pbw?utm_term=slugterra+dark+water+game+download PDF link annotation
    • https://tedatigajixa.weebly.com/uploads/1/3/0/7/130739480/0e489ad41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368221/normal_606d1348e8d30.pdfIn PDF document text
    • https://wizaxonaguwaxi.weebly.com/uploads/1/3/4/3/134306690/xisumuzaruka.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411219/normal_6017b358310e9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373239/normal_5ffd461199bfd.pdfIn PDF document text
    • https://wutipukuze.weebly.com/uploads/1/3/5/4/135401391/d3d63856249c7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417834/normal_5ff6608bf2280.pdfIn PDF document text
    • https://nenilinuda.weebly.com/uploads/1/3/1/3/131383514/raporixi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452853/normal_5fdc8236bd6aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383302/normal_605f5acfb8cd6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370547/normal_60159bb78546d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463277/normal_6021c10404046.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370528/normal_6041642b6e201.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478430/normal_5ff5e68c25711.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497093/normal_603bc7ac7b9f4.pdfIn PDF document text
    • https://zodazapel.weebly.com/uploads/1/3/4/5/134511258/renekexodod.pdfIn PDF document text
    • https://pakilimog.weebly.com/uploads/1/3/4/3/134363837/pajubiwujafudexi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403808/normal_606733ec320cf.pdfIn PDF document text
    • https://pefobasor.weebly.com/uploads/1/3/4/1/134131397/1221735.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e37d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE37D 5228 bytes
SHA-256: cb547c78915416e0728adbf8462722744f1042d96f5dcbd29c1939159898b8c0
font_01_sfnt_off0000f53f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF53F 10396 bytes
SHA-256: f9035b2d8164269cf86d96c4c6c1817806d6d5f9ef24255c393d7de859926c61

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