Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0dc101ca05e8d35…

MALICIOUS

PDF

43.1 KB Created: 2020-08-23 07:55:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 09361c4e1241e70be0cb7370d6be1b57 SHA-1: 4aeb25bd02934ecf61a1564fdae40d949be19e1d SHA-256: b0dc101ca05e8d351b62d778858f6039f9cd2fadb101a95e8e4f48953bcd29d7
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=best+twitter+video++app'. The document body, though heavily obfuscated, also contains this URL, suggesting a lure to external content. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious redirector attack pattern.

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/pify?keyword=best+twitter+video++app
    • http://tibew.absipartnership.org/uploads/1/3/0/9/130969950/tibigokodusinexisu.pdf
    • http://files.bsg-cbrne.us/uploads/1/3/1/3/131398544/xumiminoj.pdf
    • http://files.olathenorththeatre.com/uploads/1/3/1/8/131871698/7215229.pdf
    • http://kijutosu.classbrito.org/uploads/1/3/2/8/132814930/986932.pdf
    • https://cdn.shopify.com/s/files/1/0434/8834/6262/files/bv_raman_books.pdf
    • https://cdn.shopify.com/s/files/1/0429/8833/9354/files/scholastic_scope_glossary_of_literary_terms.pdf
    • https://cdn.shopify.com/s/files/1/0428/5677/5839/files/81548950359.pdf
    • https://cdn.shopify.com/s/files/1/0436/9226/1529/files/fraktur_basis_cranii_anterior.pdf
    • https://cdn.shopify.com/s/files/1/0435/4539/5359/files/jiwaves.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3365/files/basufuxezisidum.pdf
    • https://cdn.shopify.com/s/files/1/0434/7235/5478/files/52072146841.pdf
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/conda_create_environment_python_2._7.pdf
    • https://cdn.shopify.com/s/files/1/0430/0632/8995/files/2014_jeep_grand_cherokee_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/6643/3435/files/81809890510.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kofuf.pdf
    • https://cdn.shopify.com/s/files/1/0437/7798/2626/files/chillar_party_songs.pdf
    • https://cdn.shopify.com/s/files/1/0432/8688/8601/files/puralutopokanusu.pdf
    • https://cdn.shopify.com/s/files/1/0437/1618/2166/files/92828786734.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b5b.bin
d822357afa8dc1a9482031f6472966906d38cdba6e42ac8e9d003fb112867d6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B5B 5120 bytes
font_01_sfnt_off00007cf0.bin
c2566d831a7c322c765d4a0e5b10ded696b26d224d1773f3f82c34913da09e01		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF0 10052 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.