Malicious PDF — malware analysis report

Static analysis result for SHA-256 233b29c742534cc7…

MALICIOUS

PDF

68.9 KB Created: 2020-12-28 21:05:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: f59337cd4224227bbc5202a802df6ac3 SHA-1: 665c7e349b581437f0c7cf7175b025fdec21e102 SHA-256: 233b29c742534cc7e7d3a9fb94aee4005f36975e6a8407eb65e9af4faa3b28a0
284 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file contains numerous links, many pointing to disposable hosting services, and one critical link to 'traffking.ru' which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to Gmail synchronization issues, suggesting a lure to trick users into clicking malicious links. The presence of a link farm and a malicious redirector indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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.
  • 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://traffking.ru/aws?utm_term=gmail+won%2527+t+sync+android In PDF document text
    • https://pedugosiv.weebly.com/uploads/1/3/4/6/134622687/8125347.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369307/normal_5f8ff1d4bc795.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368240/normal_5fa7d4d1b0e80.pdfIn PDF document text
    • https://vitozosusa.weebly.com/uploads/1/3/4/7/134727909/392659a64a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373239/normal_5fca004a41437.pdfIn PDF document text
    • https://lofivate.weebly.com/uploads/1/3/4/3/134307733/vaxaluwod.pdfIn PDF document text
    • https://sanakutubifave.weebly.com/uploads/1/3/4/8/134849958/8ea78e6.pdfIn PDF document text
    • https://fineruliji.weebly.com/uploads/1/3/4/3/134313455/midolin-wejilorefifevoz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368245/normal_5f88375b207c6.pdfIn PDF document text
    • https://bururinuriz.weebly.com/uploads/1/3/4/8/134882015/9732637.pdfIn PDF document text
    • https://maminimavuzi.weebly.com/uploads/1/3/4/6/134640728/kakogam.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/7cfd48a359c3a4.pdfIn PDF document text
    • https://gebulofafilo.weebly.com/uploads/1/3/4/7/134717894/tesosarotubumelezuti.pdfIn PDF document text
    • https://zabuxowinuj.weebly.com/uploads/1/3/4/8/134874463/dakutuwatezixoduz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fb9f2a1-849c-442c-8ab2-1dc6cbd20e39/abhiyum_naanum_song_starmusiq.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_off0000d12b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD12B 5344 bytes
SHA-256: 274de2e08ea679ef0209f82bf813bef70be11b9f21073fad862af28c4f8fdafc
font_01_sfnt_off0000e35e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE35E 10528 bytes
SHA-256: 3ebf2a333ea195ecdd75663b1da73b14632c0c5f4a8a65acb2c79b1564ccc6fe

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