Malicious PDF — malware analysis report

Static analysis result for SHA-256 477282c886258b4b…

MALICIOUS

PDF

96.4 KB Created: 2021-04-04 04:46:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 058f8529ca2a60bf022ebf8d0f8fe7d0 SHA-1: 1244a35bc7fc5b76035627c5f430e90de18bccdc SHA-256: 477282c886258b4ba1e50c4028d14e006d8fe05c731f86adb339e67643b8e066
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 0.9997

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://pelibifir.ru/strik?utm_term=photographer%2527s+guide+to+the+sony+dsc-rx100+iii+pdf+download PDF link annotation
    • http://fortysgjdk.fun/68403671153bqvbh.pdfIn PDF document text
    • http://shop-kid-toys.online/389521089lqmjt.pdfIn PDF document text
    • http://shoop-fp.ru/gulabi_aankhen_remix_mp3_download6fj23.pdfIn PDF document text
    • http://eurostore.info/personality_psychology_articlesly5xn.pdfIn PDF document text
    • https://dunokosira.weebly.com/uploads/1/3/5/3/135349308/milusirudug-vefavo-rakazu-nowavaxuze.pdfIn PDF document text
    • https://febelozo.weebly.com/uploads/1/3/4/5/134599394/mikarawegatodun.pdfIn PDF document text
    • http://repair-kompov.ru/javojisamapep3a32f.pdfIn PDF document text
    • https://zifofuxe.weebly.com/uploads/1/3/5/3/135386801/wipigiseme.pdfIn PDF document text
    • https://cdn.sqhk.co/tekuligote/ar4LIHQ/rufases.pdfIn PDF document text
    • https://wotuterivakevom.weebly.com/uploads/1/3/4/6/134608936/c043c30.pdfIn PDF document text
    • https://rixutabenenik.weebly.com/uploads/1/3/4/4/134498467/dc9f7a8dec.pdfIn PDF document text
    • https://nikubasixuza.weebly.com/uploads/1/3/0/7/130738960/637ae17b2586.pdfIn PDF document text
    • https://cdn.sqhk.co/verexumifo/oVG8gc4/1220805543.pdfIn PDF document text
    • https://renobikedasel.weebly.com/uploads/1/3/4/8/134897329/dizimigugasiweveno.pdfIn PDF document text
    • https://gixakipero.weebly.com/uploads/1/3/1/4/131412713/lamitoxegoli.pdfIn PDF document text
    • https://cdn.sqhk.co/gudijupimeb/jjjihjN/mla_citation_format_example_book.pdfIn PDF document text
    • https://bazamafew.weebly.com/uploads/1/3/4/0/134016738/zefunajinovepozo.pdfIn PDF document text
    • https://xopavomubikun.weebly.com/uploads/1/3/4/8/134879687/2883466.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zotavoje.rf.gd/25466167956.pdfIn PDF document text
    • http://gesuposobevexo.rf.gd/75940217625.pdfIn PDF document text
    • http://temiruxol.epizy.com/antenna_balanis_book.pdfIn PDF document text
    • http://taliwugoj.rf.gd/wamevofado.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013a1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A1F 5940 bytes
SHA-256: 88e94fcdd7cfb08ea61b81d82a91b80ea09426299cabe2ebbdf8bd1ef88e7cb0
font_01_sfnt_off00014e86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E86 11120 bytes
SHA-256: 7d624a612ea14235773672ec0a48891db5786033024855b7d97a4b1152bafb7e

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