Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc929267202bbea2…

MALICIOUS

PDF

41.5 KB Created: 2020-10-07 07:34:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 7856838a7cab1cc8e5313fdba5a4725f SHA-1: 37ee2ca5f187771646ac0c932c44262470038bb0 SHA-256: cc929267202bbea29084a04f3f4b9bb6782af339d3409c78397ed7cb94ab48c3
124 Risk Score

Malware Insights

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

This PDF file contains a link to a known malicious redirector, ttraff.link, which is designed to lead users to malicious sites. The document body, though heavily obfuscated, also contains this URL, indicating an intent to lure the user to external content. The presence of multiple disposable hosting links further suggests a campaign focused on distributing malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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/pify?keyword=detective+comics+%252327+value In PDF document text
    • https://site-1036689.mozfiles.com/files/1036689/vigeri.pdfIn PDF document text
    • http://files.jbmconsultants.org/uploads/1/3/1/4/131406684/panemazobon-juponemetuv-kapizumanex.pdfIn PDF document text
    • http://files.msmale.com/uploads/1/3/1/4/131437100/papij.pdfIn PDF document text
    • http://sojen.moherlegal.com/uploads/1/3/0/9/130969341/nipageguvo_wukul_zidujaluxi_serokop.pdfIn PDF document text
    • http://famusexuj.innatdepauw.com/uploads/1/3/1/3/131379856/19b19d2451fa61.pdfIn PDF document text
    • http://files.bhofsteen.com/uploads/1/3/2/6/132696198/dusotabit.pdfIn PDF document text
    • https://site-1037130.mozfiles.com/files/1037130/1238543212.pdfIn PDF document text
    • https://site-1040503.mozfiles.com/files/1040503/wuvoma.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/80a47be5-eb54-44d6-bf7c-c77eb16a1c8b/6429515638.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/277ad026-7fe0-49e8-8c9e-7033b6cb88b8/49280813442.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/915f4d4d-44ee-407a-bc22-2908e6bbab1d/kepupaludadakuxabu.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_off0000664b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x664B 4668 bytes
SHA-256: f4bc14cc0b560fe813a1c2ba30eb1c74cf1953dfdfc053c05a67d7498e4dbeb5
font_01_sfnt_off0000762e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x762E 10440 bytes
SHA-256: e9de0fd292933af8e0318d4968529fc6dd81ff821254f15db87f24712aa39c35

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