Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8dc797786b3cf87…

MALICIOUS

PDF

47.8 KB Created: 2020-08-09 11:25:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8046ade002171f4c0be17035968c2fe0 SHA-1: a93135131f14444f7f670b11e854d0cb1690b8e5 SHA-256: d8dc797786b3cf8727ac0b9c745dc69481b32377bd6a98cb07e4a6b407dc688b
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the same malicious URL. This suggests the primary purpose is to lure the user to a malicious site, likely for further exploitation or credential harvesting. No scripts were extracted, limiting the analysis of direct execution capabilities.

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.ru/pify?keyword=tratamiento+quirurgico+del+cancer+de+pulmon+pdf
    • http://files.sdgphoto.net/uploads/1/3/0/7/130739016/81c7c81.pdf
    • http://files.dalmatiansofkentucky.com/uploads/1/3/1/4/131413766/fefokuriserejot.pdf
    • http://files.bakedbythelake.com/uploads/1/3/1/4/131483955/f4e713cb.pdf
    • http://files.upperwharfedalechurches.org/uploads/1/3/1/4/131407958/tidobera-mamuk-zoneg.pdf
    • http://bodasud.andreanunesdmd.com/uploads/1/3/1/4/131483281/5301427.pdf
    • https://cdn.shopify.com/s/files/1/0431/8851/9076/files/14641461812.pdf
    • https://cdn.shopify.com/s/files/1/0438/4748/3557/files/sosekadekow.pdf
    • https://cdn.shopify.com/s/files/1/0429/2601/4630/files/blank_clock_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/0482/9602/files/71611068049.pdf
    • https://cdn.shopify.com/s/files/1/0430/9660/4825/files/vovorujupekifalubakunizub.pdf
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/zopapitavuwuxukujumez.pdf
    • https://cdn.shopify.com/s/files/1/0438/1625/5645/files/fifa_football_score_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0447/3287/4901/files/palojinapawiketoxafubo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6593/3985/files/human_biology_mader.pdf
    • https://cdn.shopify.com/s/files/1/0438/9984/6824/files/david_gray_sail_away.pdf
    • https://cdn.shopify.com/s/files/1/0435/1174/2628/files/15899390989.pdf
    • https://cdn.shopify.com/s/files/1/0434/6173/8662/files/essentials_of_cardiopulmonary_physical_therapy_4e.pdf
    • https://cdn.shopify.com/s/files/1/0435/5453/7624/files/18534137940.pdf
    • https://cdn.shopify.com/s/files/1/0437/5930/4865/files/nakufowiditevov.pdf
    • https://cdn.shopify.com/s/files/1/0431/3051/9716/files/57617756419.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_off00007a32.bin
0fa6148a54062fa5a6e635bc6b0fc9b29f72144d71bc704ea4edcac39531f8f2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A32 5372 bytes
font_01_sfnt_off00008c59.bin
74bf07bca8a0cad1d42f41b3b2c6bf4049ad7d14b8457457be803617e3ea1a62
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C59 11048 bytes