Malicious PDF — malware analysis report

Static analysis result for SHA-256 c99141903c28885a…

MALICIOUS

PDF

43.2 KB Created: 2020-08-12 18:48:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 741915b8f593d9412bd7049f5cb1ac9b SHA-1: b9177580557645caee56ec7abffac13b15629be0 SHA-256: c99141903c28885a1fd9460268efb53a729204138f5d5adfa6ded85eb4c066a2
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain, ttraff.com. This suggests a link farm or SEO poisoning tactic to lure victims. The document body, though corrupted, contains the text 'Causes of biological hazards pdf' and the malicious URL, reinforcing the lure. No scripts were extracted, but the primary attack vector is the malicious redirector link.

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=causes+of+biological+hazards+pdf
    • http://files.sidleystandup.com/uploads/1/3/0/7/130775942/3089407.pdf
    • http://files.hannabruer.com/uploads/1/3/0/7/130739570/kivut-duriduwuzejimax-ximowozafilaz-felopatoxodake.pdf
    • http://files.ztodorova.net/uploads/1/3/2/6/132681513/7645234.pdf
    • http://fikanoteb.avatamsaka.ca/uploads/1/3/1/6/131606490/jefis_vewimenuse_wixevega_lifodizova.pdf
    • http://mexara.travelguidereviews.com/uploads/1/3/1/4/131411150/sagetexe.pdf
    • https://cdn.shopify.com/s/files/1/0438/8706/7291/files/afcat_1_2020_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0432/3662/2498/files/install_disk_creator.pdf
    • https://cdn.shopify.com/s/files/1/0427/4490/5884/files/99253727260.pdf
    • https://cdn.shopify.com/s/files/1/0432/0703/2990/files/romorinotuzixoledeg.pdf
    • https://cdn.shopify.com/s/files/1/0439/0918/5691/files/mujemibozimanadajowaku.pdf
    • https://cdn.shopify.com/s/files/1/0430/0183/9775/files/dijubiwalubizaku.pdf
    • https://cdn.shopify.com/s/files/1/0429/1559/4393/files/58938841341.pdf
    • https://cdn.shopify.com/s/files/1/0432/9970/0889/files/26193367027.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4977/files/madison_bumgarner_fangraphs.pdf
    • https://cdn.shopify.com/s/files/1/0437/5868/2273/files/40151157896.pdf
    • https://cdn.shopify.com/s/files/1/0431/6741/6471/files/nesuriw.pdf
    • https://cdn.shopify.com/s/files/1/0429/3446/8774/files/jopolad.pdf
    • https://cdn.shopify.com/s/files/1/0434/2965/8790/files/buildroot_tutorial.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_off0000697b.bin
3a0cd6b94df101b5e7cc4df46ca59b1e6718783d5651cb2e555e0ad9db7d498f
pdf-font-stream PDF embedded font (sfnt) at offset 0x697B 5512 bytes
font_01_sfnt_off00007c30.bin
3e99be792b13b89b573c81c5697caf398d7a92d21501f5d26f06942d7cf5546e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C30 10340 bytes