Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f6b04ec99cba256…

MALICIOUS

PDF

49.9 KB Created: 2020-08-08 05:03:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: feadc46eb40bdc16ef7f06c2bd1a5326 SHA-1: 213d5af3bf1f0bae3d2d937dd2ba6afff446764f SHA-256: 8f6b04ec99cba256536036b6ffae0d942a973e8fbbc3b360bcb1233131e7c1b1
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The primary malicious URL is https://ttraff.cc/pify?keyword=sheet+gauge+to+mm+chart+pdf, which likely leads to a malicious payload. The document body itself is heavily obfuscated and contains junk data, but the presence of the malicious redirector and the link farm heuristic strongly indicate a phishing or malware distribution attempt. No scripts were extracted from this sample.

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=sheet+gauge+to+mm+chart+pdf
    • http://files.createddesignsbytammy.com/uploads/1/3/1/8/131858287/c7a1e3.pdf
    • http://files.erinboake.com/uploads/1/3/0/7/130776718/maxul_zefanenumu_ruxuxotevar_jazomagudigem.pdf
    • http://files.madala134.com/uploads/1/3/1/4/131453056/8496004.pdf
    • http://files.biophysical-ecology.com/uploads/1/3/1/4/131406356/xivut_girusidusowele_finusagon.pdf
    • http://files.greenvillebrushstrokes.com/uploads/1/3/0/7/130776150/tazesolujamamab.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8863/files/18602781104.pdf
    • https://cdn.shopify.com/s/files/1/0430/9758/7861/files/38696808250.pdf
    • https://cdn.shopify.com/s/files/1/0436/2308/8290/files/pubore.pdf
    • https://cdn.shopify.com/s/files/1/0432/0326/4667/files/mixojimuwelugalimumob.pdf
    • https://cdn.shopify.com/s/files/1/0430/6187/0743/files/rimazob.pdf
    • https://cdn.shopify.com/s/files/1/0432/4245/5207/files/jadebetabud.pdf
    • https://cdn.shopify.com/s/files/1/0435/4909/8148/files/wemokevozavutupadogif.pdf
    • https://cdn.shopify.com/s/files/1/0432/8351/3494/files/46519446503.pdf
    • https://cdn.shopify.com/s/files/1/0431/3962/9218/files/26537856416.pdf
    • https://cdn.shopify.com/s/files/1/0430/5823/3493/files/vetassess_assessment_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0433/9721/8460/files/gugotos.pdf
    • https://cdn.shopify.com/s/files/1/0435/2458/7674/files/63360586002.pdf
    • https://cdn.shopify.com/s/files/1/0449/8069/9295/files/gym_workout_plan_for_weight_loss_for_mens.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_off0000798b.bin
3ed4a1d148b96b12f1f98afe89c87d2f9f29c1309d39fd913397ace5945d583a
pdf-font-stream PDF embedded font (sfnt) at offset 0x798B 5460 bytes
font_01_sfnt_off00008bf8.bin
7f651fc961729ff155c59b2755f9fd2e45e1c90ffc2d01c467dbb36c26064df4
pdf-font-stream PDF embedded font (sfnt) at offset 0x8BF8 15048 bytes