Malicious PDF — malware analysis report

Static analysis result for SHA-256 200ccd27805385ba…

MALICIOUS

PDF

100.5 KB Created: 2021-03-20 21:47:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: f20d05e4b1ab001d1664b310e70f7c73 SHA-1: 565f580a9ead08f64da182f999b7a930576884c6 SHA-256: 200ccd27805385baa22dc0a651adffb1af627db3e8eb97ef8ba47a4e54f68db5
186 Risk Score

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 0.9995

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://jottigo.ru/wix?keyword=ang+probinsyano+dec+26+2017 PDF link annotation
    • https://cdn.sqhk.co/muxaferamet/fiiujeB/xoguposis.pdfIn PDF document text
    • https://renobikedasel.weebly.com/uploads/1/3/4/8/134897329/fajapulazosanu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473375/normal_602bab5fd1a83.pdfIn PDF document text
    • https://cdn.sqhk.co/kasesiseb/jhengis/juegos_de_highway_bike_simulator.pdfIn PDF document text
    • https://miwuzuxatidako.weebly.com/uploads/1/3/0/7/130775980/f0b5b18.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451377/normal_600a0fa429d31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480383/normal_600c477a342e0.pdfIn PDF document text
    • https://fofapisobav.weebly.com/uploads/1/3/4/7/134712410/bewugepinimofarepixi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485436/normal_5fdc6bfaac720.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500889/normal_5ffb89c0a22fb.pdfIn PDF document text
    • https://cdn.sqhk.co/sixitigoxeto/iijijKx/wurowetozi.pdfIn PDF document text
    • https://cdn.sqhk.co/vilonunufuk/idohaid/playstation_4_games_black_friday.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390661/normal_5febeacfd4752.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367627/normal_5fe7dac835c7f.pdfIn PDF document text
    • https://cdn.sqhk.co/sowanigog/jclgfBk/dasenewupi.pdfIn PDF document text
    • https://vutubazedo.weebly.com/uploads/1/3/2/7/132740780/jorajikiro-redod-felafexedepukaf.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://uploads.strikinglycdn.com/files/f5969377-d34b-490c-8300-87c0fc85a471/how_to_calculate_psi_for_water_pump.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf03c7ff-0258-4415-b33b-2833ec4daab8/26955887159.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8e07f07-9abe-458b-8016-ca0a6f25f26c/autocad_lt_command_line_missing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb091c2c-7c08-408c-9023-2847ee1643ff/base_rate_neglect_defined.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38fde8f7-101e-4300-8035-558d5f76bd0e/81420284753.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013aab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13AAB 5708 bytes
SHA-256: 2e9bcbd7f53d22f272dbb3ad64074bdc97347dc757936893e7878e8ffb5d1ab1
font_01_sfnt_off00014e21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E21 12200 bytes
SHA-256: a38273c89c4def604c0d7513aab8e1e6132bf7211c626c840c8867222f5f26df
font_02_sfnt_off000176aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x176AA 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3