Malicious PDF — malware analysis report

Static analysis result for SHA-256 737596e1110c5974…

MALICIOUS

PDF

34.8 KB Created: 2020-11-06 00:00:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: ca692d639e8594566863c3d39222635d SHA-1: e44b475ab55ca1d088918836a8f6f7a2da26b5f6 SHA-256: 737596e1110c5974750acaf22e31fce2287a5703030cbf3aa3da65d6cbfa9357
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file contains a large number of embedded links, many of which point to disposable hosting services and redirector infrastructure. The primary URL, 'https://traffking.ru/strik?keyword=journey+to+china+the+mystery+of+iron+mask+dvd', suggests a lure related to a movie, likely for SEO manipulation or to distribute further malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious link farm.

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.
  • 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/strik?keyword=journey+to+china+the+mystery+of+iron+mask+dvd In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369327/normal_5f9487bed1626.pdfIn PDF document text
    • https://lozulijulejibog.weebly.com/uploads/1/3/1/8/131857057/fofukuka_diripifaxesed.pdfIn PDF document text
    • https://jufikaparilo.weebly.com/uploads/1/3/4/5/134592165/pevoj.pdfIn PDF document text
    • https://xorozatu.weebly.com/uploads/1/3/4/4/134461248/xositozomimape-mufopoparivibi-sonedivedusa-levejidab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388041/normal_5fa099a538331.pdfIn PDF document text
    • https://jatasurow.weebly.com/uploads/1/3/4/3/134358583/7175267.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422628/normal_5fa207b20270f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366317/normal_5f8dc5e9f223a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390092/normal_5f9b792f52a30.pdfIn PDF document text
    • https://papazutizo.weebly.com/uploads/1/3/4/4/134467207/8777688.pdfIn PDF document text
    • https://vevinobe.weebly.com/uploads/1/3/4/4/134487659/jegavilalid.pdfIn PDF document text
    • https://pesodubebugi.weebly.com/uploads/1/3/4/2/134234841/5604822.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416666/normal_5fa41bf15ede3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370071/normal_5f89a7763170d.pdfIn PDF document text
    • https://vodipewelo.weebly.com/uploads/1/3/1/6/131637384/576ff6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00004941.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4941 5444 bytes
SHA-256: 648041865bcf617a3d585f892a0abd7972ec7d9a18f1f31b9def379d9683d491
font_01_sfnt_off00005bac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BAC 10012 bytes
SHA-256: 571d5fbf386405f71295d01f6743a172ffa67c828ebfe6dacb13a15abe60e525

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