Malicious PDF — malware analysis report

Static analysis result for SHA-256 920fdf561e007298…

MALICIOUS

PDF

59.8 KB Created: 2020-08-09 15:59:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c167e8c916fc6e919dba41cfc5d58dba SHA-1: 69949db3b5cfada8b8cf756e6efa89f1d1b5d181 SHA-256: 920fdf561e0072985d3b2b6ea443ebddae3a409866dd20ad85855f9d0116f053
150 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The embedded URL https://ttraff.cc/pify?keyword=african+traditional+religion+pdf+download is a primary indicator of this redirection. The document body, though partially corrupted, also contains this URL, reinforcing the lure. The ML classifier strongly flagged this PDF as malicious.

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.cc/pify?keyword=african+traditional+religion+pdf+download
    • http://files.asobiteppanyaki.com/uploads/1/3/2/6/132682124/8757250.pdf
    • http://files.summitcprtraining.com/uploads/1/3/0/8/130874026/ff796552a73e8e4.pdf
    • http://files.livelifefitnesspersonaltraining.com/uploads/1/3/1/4/131483778/1d19ec71f54a70.pdf
    • http://zizelovej.ryanringbloom.com/uploads/1/3/1/0/131070722/3192981.pdf
    • https://cdn.shopify.com/s/files/1/0434/0501/7238/files/88026512986.pdf
    • https://cdn.shopify.com/s/files/1/0435/2576/7320/files/modelo_de_contrato_de_alquiler_bolivia.pdf
    • https://cdn.shopify.com/s/files/1/0432/0293/6992/files/7685476533.pdf
    • https://cdn.shopify.com/s/files/1/0429/5386/7427/files/57332901617.pdf
    • https://cdn.shopify.com/s/files/1/0432/0490/3067/files/95810012005.pdf
    • https://cdn.shopify.com/s/files/1/0431/3550/0439/files/pajam.pdf
    • https://cdn.shopify.com/s/files/1/0431/0158/5562/files/apc_smart_ups_1500va_lcd_230v.pdf
    • https://cdn.shopify.com/s/files/1/0439/3402/3848/files/aggregator_model_in_e_commerce.pdf
    • https://cdn.shopify.com/s/files/1/0434/5217/0392/files/93815882307.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/biludetejuvujatolometa.pdf
    • https://cdn.shopify.com/s/files/1/0431/4939/4071/files/84531035788.pdf
    • https://cdn.shopify.com/s/files/1/0438/5511/8501/files/33876581935.pdf
    • https://cdn.shopify.com/s/files/1/0437/3102/6071/files/42206018365.pdf
    • https://cdn.shopify.com/s/files/1/0432/0201/9487/files/38868662221.pdf
    • https://cdn.shopify.com/s/files/1/0435/9746/3714/files/barreras_de_la_comunicacion_efectiva.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000adab.bin
cdc4cfa8a64cb8f3ed94767ee4e7f871c5b08c73f9ecb210ab314f789d1b5e69
pdf-font-stream PDF embedded font (sfnt) at offset 0xADAB 5224 bytes
font_01_sfnt_off0000bf98.bin
c28fb91c3299e54d36cc98c4b098da2e2e7e1cca2b2d31a8902204b2ecb57bf6
pdf-font-stream PDF embedded font (sfnt) at offset 0xBF98 10076 bytes