Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd0976851824d26f…

MALICIOUS

PDF

44.6 KB Created: 2020-08-22 11:29:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b563e7772fdc3acbcbf63895dae9edd9 SHA-1: ff0ad2ea20bd1bbb3382363fb78ee37fc9b4da62 SHA-256: bd0976851824d26fbe864b4548f9bf2f503952f0ae434b611132663279dbaf0c
148 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to shopify.com domains, likely for SEO manipulation. One critical heuristic identified a link to a known malicious redirector at ttraff.ru, suggesting a phishing or malware delivery attempt. The document body also contains text related to 'Suspense account format pdf' and mentions 'invoice or payment language', aligning with a lure to trick users into clicking the malicious link. No scripts were extracted from this sample.

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=suspense+account+format+pdf
    • http://files.thepoeticevangelist.com/uploads/1/3/0/7/130776460/dubak-gikisovexe.pdf
    • http://files.researchtracked.com/uploads/1/3/1/4/131455275/3564fcddfb8af81.pdf
    • http://fegal.sareeduniya.shop/uploads/1/3/0/7/130739063/safexaludexu_bagabitimikar.pdf
    • http://files.erskinevilleacupuncture.com/uploads/1/3/0/7/130739170/a17b7bd1b12be.pdf
    • https://cdn.shopify.com/s/files/1/0428/4959/9654/files/android_software_update_galaxy_s7.pdf
    • https://cdn.shopify.com/s/files/1/0448/2033/2705/files/vofuk.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/69143450337.pdf
    • https://cdn.shopify.com/s/files/1/0429/1880/5657/files/arduino_nano_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/9160/7190/files/leguxubebo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/42088967576.pdf
    • https://cdn.shopify.com/s/files/1/0430/2422/0321/files/b_pharmacy_syllabus_1st_year.pdf
    • https://cdn.shopify.com/s/files/1/0435/5060/5461/files/alphabet_and_sounds.pdf
    • https://cdn.shopify.com/s/files/1/0437/1510/0826/files/5e_animate_objects.pdf
    • https://cdn.shopify.com/s/files/1/0440/2846/1206/files/46071650688.pdf
    • https://cdn.shopify.com/s/files/1/0435/5309/5844/files/kipibudibezivivegarodupif.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_off00006fe3.bin
3bc1c713c7196936e708666daecebba50077bf337f0b80094cb63551209ab53c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE3 5372 bytes
font_01_sfnt_off00008205.bin
59b9030454fd300fc76890a9b3dec5c4c2bb851037ae339236e71ae31350c833
pdf-font-stream PDF embedded font (sfnt) at offset 0x8205 10408 bytes