Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0bf17722b56b786…

MALICIOUS

PDF

42.0 KB Created: 2020-11-02 11:22:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 25470773100d220bf01f66b3376c35f8 SHA-1: 77ab83f30083842e47a586c5c788de171fa2e19c SHA-256: b0bf17722b56b786f2e32a5c544f11123caba314ea0c5cc1549bde92d1e73c5f
94 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by an ML classifier and contains a link to a known malicious redirector. The document body text, though heavily obfuscated, includes the URL and a deceptive title, suggesting a phishing or scam attempt. No scripts were extracted, but the presence of a malicious URL is a high-priority indicator.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.club/123?keyword=oral+interpretation+pieces
    • https://cdn-cms.f-static.net/uploads/4415534/normal_5f9c5731d5919.pdf
    • https://nuvefiwepopowu.weebly.com/uploads/1/3/4/5/134502743/mebuxewazabazovojiro.pdf
    • https://xokafewapi.weebly.com/uploads/1/3/4/4/134488510/kigalodidokutunatit.pdf
    • https://cdn-cms.f-static.net/uploads/4413362/normal_5f9e55c4c3f0d.pdf
    • https://naxedomabaxa.weebly.com/uploads/1/3/1/6/131606472/nadisiwom-xopanesewidimex-xiwetusev-fupemu.pdf
    • https://folemazilepi.weebly.com/uploads/1/3/1/1/131164248/kuvidusaronemib.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/susopuzupure/august_monthly_calendar.pdf
    • https://cdn.shopify.com/s/files/1/0499/8283/2790/files/pseg_power_outage_map_new_jersey.pdf
    • https://cdn.shopify.com/s/files/1/0505/8655/0429/files/betezaw.pdf
    • https://cdn.shopify.com/s/files/1/0500/2654/5305/files/mubijuzulesixiku.pdf
    • https://cdn.shopify.com/s/files/1/0495/6032/2200/files/market_leader_intermediate.pdf
    • https://cdn.shopify.com/s/files/1/0268/7326/6352/files/memrias_pstumas_de_brs_cubas_espaol.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069d9.bin
7338fc8e69b4717c979fb43d2ba9761cbbecbd522890c6b8c9fac1a803949006		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69D9 4956 bytes
font_01_sfnt_off00007ab6.bin
ce611114c8f58481eab7e22a1db9fd8c90e7a19cd313c693d921876dabb32c3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AB6 9992 bytes

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