Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b78ca2b84ca81d2…

MALICIOUS

PDF

43.6 KB Created: 2020-09-17 03:29:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6b788960134e34f5efa47f6b2e77d2b0 SHA-1: 6f00ada83d9d91345ba2af25f46d6b9469474fa1 SHA-256: 6b78ca2b84ca81d29b6ff34b5cadd46900336e122ebf7d928b4471cfaeab26e1
184 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to disposable hosting and appear to be part of a link farm designed to lure users to malicious content. One of the primary links, https://ttraff.link/wix?keyword=sims+mobile+apkpure, is identified as a malicious redirector. The ML classifier also strongly indicated maliciousness.

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://ttraff.link/wix?keyword=sims+mobile+apkpure In PDF document text
    • http://files.londontowalsingham.com/uploads/1/3/0/8/130813428/voxutobupa.pdfIn PDF document text
    • http://gixoni.reallifeconsulting.org/uploads/1/3/0/8/130874493/6c532a08.pdfIn PDF document text
    • http://files.celebrationrotarypancakerun.com/uploads/1/3/1/4/131408204/jepaluv_lalidova_kanagul.pdfIn PDF document text
    • http://files.nnft.ca/uploads/1/3/1/4/131454049/4adba2dd249da4.pdfIn PDF document text
    • http://wabefe.nnft.ca/uploads/1/3/1/6/131606666/5119180.pdfIn PDF document text
    • http://files.amandathompsonphoto.com/uploads/1/3/0/7/130776449/numedikokaxe.pdfIn PDF document text
    • http://files.knowyourbusinessplans.com/uploads/1/3/1/4/131408502/pozilenek.pdfIn PDF document text
    • http://files.jvjewelers.com/uploads/1/3/0/8/130814680/4603053.pdfIn PDF document text
    • http://files.preschoolinthevillage.org/uploads/1/3/2/7/132712282/zagono.pdfIn PDF document text
    • http://files.henryssports.com/uploads/1/3/0/7/130740590/b43d3.pdfIn PDF document text
    • http://files.montecitoluxuryrealty.com/uploads/1/3/1/4/131482930/luxabowi_fanepos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6077/2515/files/power_play_2_table_hockey.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6901/4165/files/49233320410.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3943/9510/files/vufex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5354/5632/files/5770706990.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/1062/1341/files/dictionary_lesson.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_off000068c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68C8 5272 bytes
SHA-256: b6f5608a03efdba87b2f23797301e53a14be363073f93d1b0ab4626d5bfb349b
font_01_sfnt_off00007a99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A99 10956 bytes
SHA-256: 5ee12cb336fbf79d3da237dbe10a3466b83f76f76eaf9768c9f98780cb21548c

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