Malicious PDF — malware analysis report

Static analysis result for SHA-256 17ca7d09a5b783d1…

MALICIOUS

PDF

67.2 KB Created: 2021-03-16 22:51:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 97e02aeeca6e80f74fb020650332d47b SHA-1: 5065b226cf05328b74554f8d6e8382163a0c29b0 SHA-256: 17ca7d09a5b783d139ab040295ac7f86abde8508f8cf5e3b904196fbe81b38d4
186 Risk Score

Malware Insights

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

This PDF document is classified as malicious, exhibiting characteristics of a link farm designed to redirect users to external websites. The document body, though heavily obfuscated, suggests a lure related to a 'Honda rancher es 4x4 manual'. The presence of numerous external URLs, many hosted on disposable domains, strongly indicates a phishing or SEO-based malicious redirection scheme. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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://nipisod.ru/wix?keyword=honda+rancher+es+4x4+manual PDF link annotation
    • https://gojatoxemoniro.weebly.com/uploads/1/3/4/8/134894745/5e799b3287.pdfIn PDF document text
    • https://cdn.sqhk.co/pulazapusaw/xPkgehc/roman_emperor_list_in_chronological_order.pdfIn PDF document text
    • https://zofoxutugutijor.weebly.com/uploads/1/3/0/8/130874595/6a3c059949c1.pdfIn PDF document text
    • https://pinuxutorifepo.weebly.com/uploads/1/3/4/5/134503053/butefejejitavu.pdfIn PDF document text
    • https://cdn.sqhk.co/kutajanode/Pmgjwex/5788898866.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486981/normal_5fd7864a714dd.pdfIn PDF document text
    • https://zezevibowavaki.weebly.com/uploads/1/3/4/8/134854125/4875901.pdfIn PDF document text
    • https://cdn.sqhk.co/gofejenizew/1idxifd/10k_variable_resistor_information.pdfIn PDF document text
    • https://cdn.sqhk.co/bipuzojafa/fciiyjC/supply_house_times_rep_of_the_year.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460706/normal_5fcad08dc3547.pdfIn PDF document text
    • https://tafubevodila.weebly.com/uploads/1/3/4/0/134016741/vuxeg.pdfIn PDF document text
    • https://cdn.sqhk.co/vodadavubex/0ihcicl/is_there_a_directv_app_for_laptop.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451352/normal_5ffe6075ce678.pdfIn PDF document text
    • https://cdn.sqhk.co/tumowara/eiaIha7/lexile_to_guided_reading_level_chart.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://a765b249-d442-4b07-8ea9-8318d996b894.filesusr.com/ugd/902d29_eee09bed4c9a4673b67fb7bf7c2b18fd.pdf?index=trueIn PDF document text
    • https://7a579b3f-ce96-4c66-abdc-991530493d29.filesusr.com/ugd/010c6b_b0e4fd47106f44589ad77012de6ec9c5.pdf?index=trueIn PDF document text
    • http://lilivuxaja.rf.gd/th_tc_xin_c_o_form_d.pdfIn PDF document text
    • http://tuwoboga.epizy.com/fajuleler.pdfIn PDF document text
    • http://vurorawoguw.rf.gd/broilers_feed_formulation.pdfIn PDF document text
    • https://02bc4616-4eae-4b38-b2c9-0e654f754ee0.filesusr.com/ugd/069df5_8aacdb1b56374c3f89dabc37104c31b3.pdf?index=trueIn 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_off0000cb19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB19 5296 bytes
SHA-256: acb82453849dd06feb821a27d5f32ba0887a94caab44e2da916720e4ee3317ab
font_01_sfnt_off0000dcf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCF5 10312 bytes
SHA-256: 01b4bf18972e7efbfbbca7e3ab99ff4dc9f43f8828921e6c39a2ae5d66226b3f

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