Malicious PDF — malware analysis report

Static analysis result for SHA-256 09ba429cbb01e697…

MALICIOUS

PDF

49.0 KB Created: 2020-08-15 10:45:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44709451165daeff0c9cc4b81970818c SHA-1: ba06ac8ec9cd41b99c2b0e1541001234ea7b50ab SHA-256: 09ba429cbb01e6970ec27175c873c30ff40b6e5726f53e323d3f29d9605eef09
154 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to a redirector service designed to obscure the final destination. The primary malicious URL identified is ttraff.com, which is flagged as a malicious redirector. The document body itself is heavily obfuscated but contains references to the malicious URL and other benign-looking PDF links, suggesting a link farm or SEO poisoning tactic to drive traffic to malicious infrastructure.

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=type+de+carrosserie+automobile+pdf
    • http://files.irishwinters.com/uploads/1/3/0/9/130969077/4545217.pdf
    • http://files.burnthorizon.co.uk/uploads/1/3/2/7/132741339/jalijel_ditojifuru_tozigarimedo_lizeragazoduja.pdf
    • http://files.voteinthehood.org/uploads/1/3/2/6/132680905/pobezutejar_senilomip_gasofefo_wezogel.pdf
    • http://files.perthtamilchurch.com/uploads/1/3/0/7/130739059/17b34fd254c0e9e.pdf
    • http://files.laniereducationfoundation.org/uploads/1/3/0/8/130813420/tededotezaluvometo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/0675/4970/files/ergonomics_standards.pdf
    • https://cdn.shopify.com/s/files/1/0432/3888/3495/files/iterative_deepening_depth-_first_search_python.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8863/files/anthropometry_journal.pdf
    • https://cdn.shopify.com/s/files/1/0431/4890/2557/files/varicela_gpc.pdf
    • https://cdn.shopify.com/s/files/1/0434/3519/6568/files/jenevidexejiroraze.pdf
    • https://cdn.shopify.com/s/files/1/0435/9821/7374/files/gufutetetajunilelorepegu.pdf
    • https://cdn.shopify.com/s/files/1/0437/1605/1112/files/92496683191.pdf
    • https://cdn.shopify.com/s/files/1/0435/2222/8379/files/classic_wow_enhancement_shaman_gear_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/9599/0175/files/60322773923.pdf
    • https://cdn.shopify.com/s/files/1/0437/0333/7115/files/94762346289.pdf
    • https://cdn.shopify.com/s/files/1/0437/9721/7440/files/30142162951.pdf
    • https://cdn.shopify.com/s/files/1/0441/3738/2040/files/jetev.pdf
    • https://cdn.shopify.com/s/files/1/0440/6870/0310/files/acidosis_alkalosis.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_off00007d26.bin
cec83fac5ced6a87d106fbe19879f7ed4dacfe5cb2e2ba908ca6b6b43d39d3f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D26 5492 bytes
font_01_sfnt_off00008fbe.bin
fa96c50aebb2c869df6402000d41eb4b8bc8c70302050619af0537e62e9de654		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FBE 11892 bytes

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