Malicious PDF — malware analysis report

Static analysis result for SHA-256 46fceb66ca2c20c2…

MALICIOUS

PDF

76.5 KB Created: 2021-03-09 23:54:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 540e269a411cd55c657ee95918ba33af SHA-1: 202c5734f0e95e5f9dd70705ee194981923beb54 SHA-256: 46fceb66ca2c20c2e9836a42675b30a21f7b9b3c5e39f7e162606e21bd552c77
186 Risk Score

Malware Insights

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

The PDF file was identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV detecting it as Pdf.Phishing.Trojan. The presence of a large number of external links, including those on disposable hosting, strongly suggests a link farm or phishing lure. While no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of an attempt to redirect users to malicious content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://gimoguvi.ru/123?utm_term=netflix+no+android+auto PDF link annotation
    • https://vadutebo.weebly.com/uploads/1/3/4/8/134889136/7845403.pdfIn PDF document text
    • https://cdn.sqhk.co/tamejenonisi/jbvje8H/65370189578.pdfIn PDF document text
    • https://cdn.sqhk.co/nububufi/jhgdjcQ/pinballz_go_karts.pdfIn PDF document text
    • https://mabamigetope.weebly.com/uploads/1/3/4/4/134493328/7e5405.pdfIn PDF document text
    • https://divupamafotot.weebly.com/uploads/1/3/0/7/130739309/880656.pdfIn PDF document text
    • https://zubikazosiz.weebly.com/uploads/1/3/4/7/134761183/8b2f6185.pdfIn PDF document text
    • https://cdn.sqhk.co/dagosasojo/ehdbOLf/legend_of_solgard_guild_boss_guide.pdfIn PDF document text
    • https://wukelefitifaka.weebly.com/uploads/1/3/4/8/134882985/3218973.pdfIn PDF document text
    • https://wixevilit.weebly.com/uploads/1/3/4/8/134873569/2146864.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kugofabafomozo.epizy.com/61269648328.pdfIn PDF document text
    • http://gobiburitumeri.epizy.com/waxatixirajukerodaras.pdfIn PDF document text
    • http://fegubitexore.rf.gd/use_me_in_a_sentence_for_kindergarten.pdfIn PDF document text
    • https://68e1e3d4-268d-49bc-a8aa-b119cb10fea7.filesusr.com/ugd/3ceeb9_8696d6ca125a43289d7795ee8c64850d.pdf?index=trueIn PDF document text
    • https://55963656-6eb1-4b25-bcd5-bb835d65808b.filesusr.com/ugd/0064ae_32d1f7bd45f64f508f3baa93df47a9a4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jujojomojemiz/cambridge_advanced_learner_s_dictionary_pc.pdfIn PDF document text
    • https://238a82c5-85a8-4641-a991-2f0f5270ddc4.filesusr.com/ugd/63f22d_fba6baf6ba5343ebbb2da67ad419895e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xeponodij/film_frozen_2013_sub_indo_360p.pdfIn PDF document text
    • https://s3.amazonaws.com/nitizobuv/winirigetixab.pdfIn PDF document text
    • http://gurevetafajes.epizy.com/how_to_reset_a_general_electric_dehumidifier.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_off0000f183.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF183 4760 bytes
SHA-256: 9c4dfa9f0ab089b9caba2b85384edb53b6bfaca7ebb3ba5492e24ada1896d64c
font_01_sfnt_off000101cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101CB 10388 bytes
SHA-256: 09f677f736cbc91d5d5447c4b01ef8c0bc2e230f57aaf05654e71e1e78a00052

Open this report in the interactive analyzer, or submit your own file for analysis.