Malicious PDF — malware analysis report

Static analysis result for SHA-256 01746cbb769e3c98…

MALICIOUS

PDF

134.2 KB Created: 2020-09-03 13:49:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb2814ac1c48033f6551d3853fc94a67 SHA-1: d8fcc349f1b4d785a26ec1511b14c89889cba0ce SHA-256: 01746cbb769e3c98c3df993f027428f6e71901fcb32e70de0ce8e2f42a8a7511
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector infrastructure at 'ttraff.ru'. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly suggests the document's purpose is to trick users into engaging in an advance-fee fraud. The presence of a link related to 'aamir khan lagaan movie' in the document body further supports a lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.ru/wix?keyword=aamir+khan+lagaan+movie
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/6734/1981/files/carcinoma_epidermoide_de_pulmon.pdf
    • https://cdn.shopify.com/s/files/1/0435/5817/4883/files/4423292491.pdf
    • https://cdn.shopify.com/s/files/1/0440/5601/9109/files/bolovugidugiva.pdf
    • https://cdn.shopify.com/s/files/1/0437/8548/6485/files/16425071316.pdf
    • https://cdn.shopify.com/s/files/1/0432/9275/4080/files/nawabigeliti.pdf
    • https://cdn.shopify.com/s/files/1/0427/9199/3500/files/73018940716.pdf
    • https://cdn.shopify.com/s/files/1/0433/6504/0286/files/21295248120.pdf
    • https://cdn.shopify.com/s/files/1/0432/6142/7867/files/rodusalarelukira.pdf
    • https://cdn.shopify.com/s/files/1/0429/7375/7603/files/physically_based_rendering_encyclopedia.pdf
    • https://cdn.shopify.com/s/files/1/0430/9244/3303/files/ansys_workbench_tutorial_release_14._5.pdf
    • https://cdn.shopify.com/s/files/1/0432/9039/4788/files/vaterevefipize.pdf
    • https://cdn.shopify.com/s/files/1/0440/1247/0422/files/declaration_of_conformity_template_nz.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016b78.bin
af2f9f0452bdc8775f71b64f67b33bc2ec4bc440267aacac2c42897e0a1ecce4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16B78 26092 bytes
font_01_sfnt_off0001bd93.bin
866f25817db314c6b5502e2244346c8804bca9657fbf1672fba7760f94a9d814		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1BD93 5036 bytes
font_02_sfnt_off0001ce90.bin
ace229f08f75bd28c4326a0343b2da3c867320026bf53fcb19f80c7586da214c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1CE90 11508 bytes
font_03_sfnt_off0001f5d1.bin
c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1F5D1 16164 bytes

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