Malicious PDF — malware analysis report

Static analysis result for SHA-256 29efee5aad3d2253…

MALICIOUS

PDF

36.6 KB Created: 2020-08-21 18:46:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0509124a862e93c3870876a6e3a8aa3c SHA-1: d15b21ec8098f8a2c50640b8dd9299ec80161933 SHA-256: 29efee5aad3d2253dc0f6c35af6415abf611cadb1a5ac0c1bc3343aad74fb901
150 Risk Score

Malware Insights

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

The PDF was flagged for containing a malicious redirector link and a large number of embedded links, suggesting a link farm or SEO manipulation tactic. The primary malicious URL identified is https://ttraff.cc/pify?keyword=facebook+icon++vector+free. The document body contains garbled text and some embedded URLs, but no clear narrative. The ML classifier strongly indicated maliciousness.

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=facebook+icon++vector+free
    • http://files.azcsa.org/uploads/1/3/0/7/130740065/retefe.pdf
    • http://files.frederickspersiancarpets.com/uploads/1/3/0/7/130775434/sixiwewenojurinawexe.pdf
    • http://files.nancydcreativeart.com/uploads/1/3/0/8/130814129/3877565.pdf
    • http://nolum.elaineyuhomes.com/uploads/1/3/1/4/131406717/vipolokoralila_nelizefo_pipowom.pdf
    • https://cdn.shopify.com/s/files/1/0460/2249/2319/files/the_day_after_tomorrow_full_game.pdf
    • https://cdn.shopify.com/s/files/1/0439/1682/0648/files/dictonary_english_khmer.pdf
    • https://cdn.shopify.com/s/files/1/0434/6321/3209/files/68070108704.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/26450106566.pdf
    • https://cdn.shopify.com/s/files/1/0430/0200/3615/files/engineering_fluid_mechanics_elger.pdf
    • https://cdn.shopify.com/s/files/1/0435/8730/5629/files/kazunuzexijotarev.pdf
    • https://cdn.shopify.com/s/files/1/0430/7622/3129/files/17738148622.pdf
    • https://cdn.shopify.com/s/files/1/0430/1275/1523/files/47690006198.pdf
    • https://cdn.shopify.com/s/files/1/0435/9041/8591/files/melodies_from_heaven.pdf
    • https://cdn.shopify.com/s/files/1/0435/6289/3471/files/arteri_karotis.pdf
    • https://cdn.shopify.com/s/files/1/0430/9119/8112/files/segiwodozid.pdf
    • https://cdn.shopify.com/s/files/1/0434/8716/6628/files/78693506258.pdf
    • https://cdn.shopify.com/s/files/1/0431/6584/3620/files/hamachi_network_adapter_error.pdf
    • https://cdn.shopify.com/s/files/1/0438/4659/8816/files/david_walliams_gangsta_granny.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_off00004594.bin
3324aaeb815ecf37267a851528ee9e69d9dd12d2b518049746441bde94ed78a5
pdf-font-stream PDF embedded font (sfnt) at offset 0x4594 4672 bytes
font_01_sfnt_off0000557f.bin
24a800c9ecc98eba3eff01d20313859662408ad94cffbfddf0eb3f629c024999
pdf-font-stream PDF embedded font (sfnt) at offset 0x557F 10580 bytes
font_02_sfnt_off00007750.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7750 4324 bytes