Malicious PDF — malware analysis report

Static analysis result for SHA-256 3200fc130615d3cd…

MALICIOUS

PDF

56.7 KB Created: 2020-08-28 06:52:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ba96a7f245243e16590fc17121b56e92 SHA-1: f00a36a6526913d91fb1da559cff0eb82c64ffd1 SHA-256: 3200fc130615d3cd389c0a21d8ec6719de75f11231b94d1445630459e6e6f3a1
150 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier as malicious and contains a critical heuristic indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains multiple embedded URLs, including a primary redirector at 'https://ttraff.com/pify?keyword=jerarqu%25C3%25ADa+de+los+valores'. The presence of a large number of external PDF links suggests a link farm or redirection scheme designed to lead users to potentially harmful content.

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=jerarqu%25C3%25ADa+de+los+valores
    • http://files.foothillsrh.org/uploads/1/3/1/4/131411596/gonepodigazom.pdf
    • http://files.lewiswalsh.net/uploads/1/3/0/7/130776089/kudabopujixijoz_falir.pdf
    • http://joxux.designsbyjmartin.com/uploads/1/3/1/3/131379685/zelat_womijojeja.pdf
    • http://files.morganvalleycandles.com/uploads/1/3/1/3/131380341/5716496.pdf
    • https://cdn.shopify.com/s/files/1/0448/9006/3003/files/teoria_da_aprendizagem_cognitiva.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/galuta.pdf
    • https://cdn.shopify.com/s/files/1/0432/2207/3506/files/adjectives_performance_appraisal.pdf
    • https://cdn.shopify.com/s/files/1/0429/8617/6675/files/wumaxetuwulas.pdf
    • https://cdn.shopify.com/s/files/1/0428/0628/0355/files/browser_apk_android_2._3._6.pdf
    • https://cdn.shopify.com/s/files/1/0431/0669/7367/files/spotify_desktop_equalizer.pdf
    • https://cdn.shopify.com/s/files/1/0437/2257/1930/files/53131617635.pdf
    • https://cdn.shopify.com/s/files/1/0433/0792/5664/files/pioneer_fh-_p8000bt.pdf
    • https://cdn.shopify.com/s/files/1/0462/2601/4362/files/kowezenejixiwun.pdf
    • https://cdn.shopify.com/s/files/1/0428/1230/9671/files/lorenemeverimidusu.pdf
    • https://cdn.shopify.com/s/files/1/0432/9370/4356/files/4286537733.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_off00008f11.bin
ab04b9d10c1a799af424fb902170f91fd0a189f588fc05f88db2ba335981fa49
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F11 4696 bytes
font_01_sfnt_off00009f1a.bin
2cc04c02727eeac835648ed1e9af3368eae224d274db6dba79c71be977a05bb4
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F1A 11956 bytes
font_02_sfnt_off0000c5ee.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0xC5EE 4324 bytes