Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ba5722199039ab6…

MALICIOUS

PDF

128.9 KB Created: 2021-05-30 00:43:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 17eb0a9cdb0297f9d13c2cbcad1eebdd SHA-1: 4bf632ca2f3a3dbdb6fd2a8797e3e7ea8d3953a9 SHA-256: 5ba5722199039ab66586ff73db9df58b4728a31de68e6c176c022011021f59a5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file exhibits characteristics of a phishing or malware distribution lure. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to distribute malicious content or redirect users to phishing sites. The presence of a 'download' button heuristic further supports the intent to trick users into downloading further payloads. ClamAV detection as 'Pdf.Phishing.Trojan' confirms the malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://xezojetit.ru/strik?utm_term=final+fantasy+10+apk PDF link annotation
    • https://static.s123-cdn-static-d.com/uploads/4393752/normal_60b005e012122.pdfIn PDF document text
    • https://metoxuxiduwano.weebly.com/uploads/1/3/1/6/131636764/1576513.pdfIn PDF document text
    • https://ziwirekow.weebly.com/uploads/1/3/4/5/134529616/13a7c879550.pdfIn PDF document text
    • https://fubolilodizewe.weebly.com/uploads/1/3/5/3/135312413/2168834.pdfIn PDF document text
    • https://gonubogebedop.weebly.com/uploads/1/3/4/8/134886664/folur.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404296/normal_6040ad9759ab4.pdfIn PDF document text
    • https://buwuxebukiz.weebly.com/uploads/1/3/1/6/131606134/49d7377.pdfIn PDF document text
    • https://lubawefajisewo.weebly.com/uploads/1/3/4/4/134443910/vitanule.pdfIn PDF document text
    • https://nitowapesapu.weebly.com/uploads/1/3/4/4/134442046/93eda9.pdfIn PDF document text
    • https://tonibakak.weebly.com/uploads/1/3/5/3/135346506/cc9a85002.pdfIn PDF document text
    • https://lijupumo.weebly.com/uploads/1/3/4/4/134496400/0bafde5d.pdfIn PDF document text
    • https://wavasifowimuzog.weebly.com/uploads/1/3/5/3/135321241/munekapofedimijavas.pdfIn PDF document text
    • https://tewoxole.weebly.com/uploads/1/3/2/6/132695213/veroveve.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374533/normal_60033c3721acc.pdfIn PDF document text
    • https://vorevowupi.weebly.com/uploads/1/3/4/6/134633589/8074645.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486060/normal_5ffd0ad1793d2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473947/normal_5ff8f09177ec4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453906/normal_601728e13049e.pdfIn PDF document text
    • https://sotokogel.weebly.com/uploads/1/3/4/2/134266154/gabejadigotimevidago.pdfIn PDF document text
    • https://divulonuwuw.weebly.com/uploads/1/3/1/4/131482828/1415149.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392651/normal_60217f7b7ad1b.pdfIn PDF document text
    • https://dewotime.weebly.com/uploads/1/3/1/6/131606762/sufolopigize_bonij.pdfIn PDF document text
    • https://warajepij.weebly.com/uploads/1/3/4/6/134608856/negipesukes.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off0001daf1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1DAF1 17524 bytes
SHA-256: dabb6a1bdfd7ec4e2471a3e2f6215f72f8b37b6b7beed862365567e5df539992
font_00_sfnt_off00018ad8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18AD8 5372 bytes
SHA-256: 27a46211ece2dca8d9ea0ce3cf4a6096b13389c2fad404640f2b8406f1771961
font_01_sfnt_off00019d91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19D91 5112 bytes
SHA-256: 58cce7566dcf359dffbf41fc113562a0b579c9ab3451d50a1e9f19610e94d093
font_02_sfnt_off0001af23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AF23 13176 bytes
SHA-256: e91b9fafb35d391aa1396b89e96c16710773643e9c5e5ec0ee9acb9acb7ae90c