Malicious PDF — malware analysis report

Static analysis result for SHA-256 3426f7a3a765d799…

MALICIOUS

PDF

41.2 KB Created: 2020-10-31 03:51:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: eb82be101b719127f186f852efa316a3 SHA-1: 6673a08a8b25ae99826b2315a331da9c65d00417 SHA-256: 3426f7a3a765d7991589c14748d861d7ee23e1779cf1b0e7aa6911711abb819e
174 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link to a known malicious redirector, ggtraff.ru, which is designed to lead users to potentially harmful content. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF files. The presence of a callback lure suggests a phishing or scam attempt, aiming to trick the user into calling a number under the guise of a billing or security issue.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://ggtraff.ru/strik?keyword=pasco+county+official+records+phone In PDF document text
    • https://cdn-cms.f-static.net/uploads/4375356/normal_5f9591465f736.pdfIn PDF document text
    • https://ximazula.weebly.com/uploads/1/3/0/7/130738777/4165744.pdfIn PDF document text
    • https://jenafowumavadas.weebly.com/uploads/1/3/1/4/131437472/zokufij.pdfIn PDF document text
    • https://lajojixuvoporor.weebly.com/uploads/1/3/0/7/130738555/dasimon.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/e914282f-6f79-4973-bfbd-cac47b8afc43/dederuzetaditamemurusotar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9095890a-e5a0-494b-905c-df0a4c923e4b/92251922842.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37116455-186a-4226-a321-8591c16eb114/trigonometric_formula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5538/0630/files/halo_5_game_free_download_for_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2583bd00-87fc-463a-a661-24282e318dec/kazoguveg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/828b6821-5b85-4b58-9fad-0974d23a614b/8983503904.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1344/7584/files/40848674525.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/6312/2337/files/facetime_pro_apk_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/0933/4184/files/fozir.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_off00005fe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE4 5348 bytes
SHA-256: e93efbf54f6ec05fbd02a9f93eb1cd6c437130bb459d51ba6d243e37e84dc5cc
font_01_sfnt_off00007219.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7219 11132 bytes
SHA-256: c0db15289891efbf386f88aceed87e81abbb19f0f8c0c647352ab212fffad81f

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