Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc9d1324fbe39c95…

MALICIOUS

PDF

43.9 KB Created: 2020-08-17 03:59:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b019b7fb08c89fef11e0b455b3cd0df7 SHA-1: 3a49da3892576acc2b807cb5e7a53605b07af548 SHA-256: bc9d1324fbe39c954261f767a60fdc08b27c029f0f4fdb0409a5fea699432bad
150 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'Nutrition et performance sportive livre' and the malicious URL, suggesting a lure to a scam or phishing page. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=nutrition+et+performance+sportive+livre
    • http://zoduvub.gwrraiachapa.com/uploads/1/3/1/3/131384635/putusox_tobogopijuna_nevikedemat.pdf
    • https://cdn.shopify.com/s/files/1/0435/5319/4133/files/defutuwipaxebixibidod.pdf
    • https://cdn.shopify.com/s/files/1/0431/2704/6298/files/literature_review_on_automatic_voltage_regulator.pdf
    • https://cdn.shopify.com/s/files/1/0431/7518/2485/files/9019681051.pdf
    • https://cdn.shopify.com/s/files/1/0434/8218/5893/files/bpsc_question_paper_64th.pdf
    • https://cdn.shopify.com/s/files/1/0430/0279/0039/files/dawani.pdf
    • https://cdn.shopify.com/s/files/1/0433/7516/5594/files/raroxeridufukelakupi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/77636621448.pdf
    • https://cdn.shopify.com/s/files/1/0430/5040/1943/files/tuzolagurakexifejefanalu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000605e.bin
8ddfce9b51a11de30b474ae42a0bf3ea5268cf255968ffaaeb14685c344db55d
pdf-font-stream PDF embedded font (sfnt) at offset 0x605E 5072 bytes
font_01_sfnt_off0000718b.bin
2fd490f8b39c20e2f17b8939871ca3722c4ee17131d1db5cf1bd7e6c372527d0
pdf-font-stream PDF embedded font (sfnt) at offset 0x718B 10436 bytes
font_02_sfnt_off00009522.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x9522 4324 bytes