Malicious PDF — malware analysis report

Static analysis result for SHA-256 d94d9ae6165e52de…

MALICIOUS

PDF

64.2 KB Created: 2020-08-14 02:15:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a8cf32d58d0bab1a52230609a78d258a SHA-1: 2193f738dc0bf32231231b6aa1e51bd07365bc36 SHA-256: d94d9ae6165e52ded9e4f6969d4ee55f10f96f2fd24a2263bba22d48f0e659b6
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.cc) that is known to host malicious content. The document body, though heavily obfuscated, contains a URL that appears to be a lure for design templates, suggesting a social engineering pretext. The ML classifier strongly flagged this PDF as malicious, and the presence of a malicious redirector link confirms the intent to lead the user to harmful infrastructure.

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=bootstrap+design+templates+dashboard
    • http://vapisuwab.lowcountryliberals.com/uploads/1/3/1/4/131454526/632b4c9c7f4.pdf
    • http://files.fitrdeluca.com/uploads/1/3/2/6/132682822/jutafekodemef_lazedilikaza_zopaxo_tuluremevenos.pdf
    • http://rilar.ashavandoyon.com/uploads/1/3/0/8/130813846/jijiwasuxab_gizanek_sepekimimus.pdf
    • https://cdn.shopify.com/s/files/1/0437/8404/4705/files/vovijasuwiroku.pdf
    • https://cdn.shopify.com/s/files/1/0430/9218/1153/files/42369731853.pdf
    • https://cdn.shopify.com/s/files/1/0433/9220/4950/files/65307388886.pdf
    • https://cdn.shopify.com/s/files/1/0437/8283/2280/files/marlon_brando_songs_my_mother_taught_me.pdf
    • https://cdn.shopify.com/s/files/1/0439/9765/9294/files/larson_calculus_10th_edition_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0431/7144/6939/files/tuparesozufakasit.pdf
    • https://cdn.shopify.com/s/files/1/0432/4586/3067/files/arduino_programming_notebook_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0437/8496/2200/files/gijujoned.pdf
    • https://cdn.shopify.com/s/files/1/0435/2668/4824/files/skripsi_akuntansi_syariah.pdf
    • https://cdn.shopify.com/s/files/1/0427/6885/9303/files/mowaturokelamekuz.pdf
    • https://cdn.shopify.com/s/files/1/0437/4567/3377/files/full_body_workout_routine_for_weight_loss_at_home.pdf
    • https://cdn.shopify.com/s/files/1/0440/4091/3046/files/wazeso.pdf
    • https://cdn.shopify.com/s/files/1/0430/5007/4269/files/69733022554.pdf
    • https://cdn.shopify.com/s/files/1/0431/6332/0471/files/1247067797.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_off0000b61f.bin
963175bc7ce8e78d25b80309101c01eb27ac7a840e0c15fc1f3d35902ac5602b
pdf-font-stream PDF embedded font (sfnt) at offset 0xB61F 5564 bytes
font_01_sfnt_off0000c8d4.bin
204778048b2e31b3e27ea5ccefc89019ede4ce3fafd144d903d80e130f9e69f6
pdf-font-stream PDF embedded font (sfnt) at offset 0xC8D4 13692 bytes