Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d57728abdd7c530…

MALICIOUS

PDF

185.6 KB Created: 2020-08-23 12:25:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d2b8a112f016f098358b18494b15ca18 SHA-1: e2833dec7c51c13fddc7d31c931583cb57919101 SHA-256: 0d57728abdd7c53030cd291800732054d73cf54bbfda1f7a046cc5b41faf68f8
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a link to a known malicious redirector, ttraf.ru, which is disguised with a lure related to the 'Affaire Dreyfus'. This, combined with the heuristic indicating an advance-fee scam, suggests the document is designed to trick users into clicking the malicious link. The ML classifier also strongly flagged this PDF as malicious.

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.
  • 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/pify?keyword=affaire+dreyfus+pdf
    • http://moxifi.grandbendsoccer.ca/uploads/1/3/0/7/130775413/jadababateninik-mowomede-gozirejur.pdf
    • http://files.gnostisisme.org/uploads/1/3/1/4/131454436/05a9111ba8c39.pdf
    • http://files.twistedrootswood.com/uploads/1/3/1/4/131407465/jifagomidinura.pdf
    • http://files.mcccil.org/uploads/1/3/1/1/131163601/1375472.pdf
    • http://debomun.appledentaleducation.com/uploads/1/3/2/3/132302842/803f83472588096.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/6744/0290/files/vikapesite.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dedapefe.pdf
    • https://cdn.shopify.com/s/files/1/0433/9020/6117/files/tazuzenagevalowasasebuf.pdf
    • https://cdn.shopify.com/s/files/1/0440/9799/4904/files/behavioral_statistics_in_psychology.pdf
    • https://cdn.shopify.com/s/files/1/0432/4130/8319/files/flight_alphabet.pdf
    • https://cdn.shopify.com/s/files/1/0430/5358/0439/files/megetozegewib.pdf
    • https://cdn.shopify.com/s/files/1/0437/2729/0518/files/70204903826.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/gewemekawemabulafidito.pdf
    • https://cdn.shopify.com/s/files/1/0435/8039/1585/files/brgeramt_berlin_anmeldung.pdf
    • https://cdn.shopify.com/s/files/1/0434/2074/5893/files/87972788718.pdf
    • https://cdn.shopify.com/s/files/1/0434/0776/9750/files/birdland_weather_report_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0429/9735/0554/files/komopanugubezijakem.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_off00029c67.bin
23c199790ebdbefe0c850f5cd4998b84015b4c1d40fec3ebeda44a2e2ce62787		 pdf-font-stream PDF embedded font (sfnt) at offset 0x29C67 5092 bytes
font_01_sfnt_off0002add1.bin
e6ac7f71533d78e09a73a91d504a8f1cb4123e60a1fee41b680aeaa7d4a29dd2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ADD1 13552 bytes

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