Malicious PDF — malware analysis report

Static analysis result for SHA-256 045c015a7ca13d0e…

MALICIOUS

PDF

44.2 KB Created: 2020-08-13 23:45:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47126a5b3130810eaf2f101e3f1df186 SHA-1: 90eba64e330dd60a013346792c9d81ef6c1877c0 SHA-256: 045c015a7ca13d0e4744015d0806830e5f5f73b58fb3c4e0db770948b265b7fd
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a link farm and a redirector link, indicating a malicious intent to lead users to harmful content. The primary malicious URL identified is https://ttraff.cc/pify?keyword=dissertation+acknowledgements+examples+pdf, which is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains references to the same malicious URL, reinforcing the phishing lure.

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 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.
  • 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.cc/pify?keyword=dissertation+acknowledgements+examples+pdf
    • http://mitovujul.chwpress.com/uploads/1/3/2/3/132302939/xisatoroteka-ludozaduv-pixikug.pdf
    • http://files.lindsayreidart.co.uk/uploads/1/3/0/8/130874588/gegafidemoni.pdf
    • http://files.luthanealadams.com/uploads/1/3/0/7/130739654/zupezigu.pdf
    • http://zusijibox.dawnamberknight.ca/uploads/1/3/1/4/131437792/pojamajem_bufiv_suginabexixod_sipovipikosoxu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/5204/7255/files/hearthstone_arena_guide_september_2019.pdf
    • https://cdn.shopify.com/s/files/1/0434/3663/8369/files/28003907250.pdf
    • https://cdn.shopify.com/s/files/1/0440/9635/6504/files/sinafoduvalig.pdf
    • https://cdn.shopify.com/s/files/1/0437/4944/1687/files/back_titration_problems.pdf
    • https://cdn.shopify.com/s/files/1/0439/2484/8795/files/fojofuzagunuviluxinalav.pdf
    • https://cdn.shopify.com/s/files/1/0430/8749/5321/files/non_cash_expenses.pdf
    • https://cdn.shopify.com/s/files/1/0439/4539/4331/files/37108989406.pdf
    • https://cdn.shopify.com/s/files/1/0432/1378/3203/files/mupufedisazubumen.pdf
    • https://cdn.shopify.com/s/files/1/0429/9754/7157/files/34876182030.pdf
    • https://cdn.shopify.com/s/files/1/0429/9279/5801/files/55729712929.pdf
    • https://cdn.shopify.com/s/files/1/0439/4539/4331/files/zajetavizovalukamoke.pdf
    • https://cdn.shopify.com/s/files/1/0436/1024/3230/files/sogetonaxozitozonipelu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6819/3952/files/coachmen_rv_owners_manual.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_off00006d2a.bin
3d24af27821c2cf49193a56a51d546ce16ccd12198eeb49f797e3f0f7426fe9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D2A 5696 bytes
font_01_sfnt_off0000809a.bin
012c4bc5aeeb9601cd409a4c940027170b4fed2482f72c0e7671b016f19b0946		 pdf-font-stream PDF embedded font (sfnt) at offset 0x809A 10216 bytes

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