Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b73a3bd6b8bfe32…

MALICIOUS

PDF

82.3 KB Created: 2020-08-04 01:21:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f6da391f2aa1b55f3efb2ae79425124b SHA-1: c635d21f0c34ed230934f1ae02e15de3cdceda42 SHA-256: 5b73a3bd6b8bfe32d40ac6200c22233ddc65d06e8f12db0692c53a7bc2c59bdf
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically 'ttraff.com'. It also exhibits a PDF link farm heuristic, suggesting an attempt to distribute or obscure malicious links. The embedded URLs and the document's structure indicate a lure to external content, likely for phishing or malware distribution.

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.com/wb?keyword=zohar%20cabala%20pdf
    • http://files.jltreasures.com/uploads/1/3/2/3/132302998/8474487.pdf
    • http://files.jerichotownlibraryvt.org/uploads/1/3/1/4/131454501/ec79f8.pdf
    • http://files.mikesalsgiver.com/uploads/1/3/0/8/130813325/pilifareminibe-zuxogemomo.pdf
    • http://files.cherylannhillsartist.com/uploads/1/3/1/4/131409090/kikoxupufa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0432/8649/5396/files/javuvuxarinezoramof.pdf
    • https://cdn.shopify.com/s/files/1/0429/2263/9527/files/21777364106.pdf
    • https://cdn.shopify.com/s/files/1/0440/1391/2222/files/calculus_6th_edition_hughes_hallett_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0428/1496/3868/files/vector_in_c.pdf
    • https://cdn.shopify.com/s/files/1/0432/3151/0690/files/pekeborezavuv.pdf
    • https://cdn.shopify.com/s/files/1/0429/2699/7663/files/nunogelojosagaxikuwufivep.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/essentials_of_chemical_reaction_engineering.pdf
    • https://cdn.shopify.com/s/files/1/0429/3722/1276/files/96085011295.pdf
    • https://cdn.shopify.com/s/files/1/0433/4016/9384/files/navazofibagegigeda.pdf
    • https://cdn.shopify.com/s/files/1/0437/2201/4870/files/45985773677.pdf
    • https://cdn.shopify.com/s/files/1/0437/4921/2309/files/resmed_s9_clinician_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/4470/8245/files/tuforav.pdf
    • https://cdn.shopify.com/s/files/1/0429/5193/4108/files/terapetujoridimogurumoxa.pdf
    • https://cdn.shopify.com/s/files/1/0434/8516/7766/files/jewewusurugejewuwun.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce59.bin
4c82ed216c71b3195c62b59d7d043c80317966addc7fa5a70e264b1a80708143		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCE59 3012 bytes
font_01_sfnt_off0000d920.bin
7881adff0ac9aaa278902076148e26352873c7a384109fa78a58742ef3fb7054		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD920 4596 bytes
font_02_sfnt_off0000e8c7.bin
ac9ca5920828dc38c829c763fdbbe2c29b6115be57c5e873c22ae373f9cf66d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C7 15136 bytes
font_03_sfnt_off0001188f.bin
daf224af30837ea0d3bf402ac48c87cc11229ad95a188eac5cde7caa45d216da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1188F 16132 bytes
font_04_sfnt_off00012d7e.bin
ad623bc7c681097dfa1224999cf6cc6072d3ca9a137655dc1129b0261f0b357c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12D7E 4324 bytes

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