Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d80ee3b88e859c2…

MALICIOUS

PDF

41.4 KB Created: 2020-08-14 23:39:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 731bf23e88b1fb453bf43e6808c35b2f SHA-1: 7509430f98703e024a0bd8985c182e56e66de74c SHA-256: 8d80ee3b88e859c2237f8a047759eb452460a9a52ed0586802bff9349518d97f
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK pointing to 'https://ttraff.cc/pify?keyword=twin+xl+platform+bed+diy'. Another critical heuristic, PDF_SEO_LINK_FARM, indicates a mass of external PDF links, with 'https://cdn.shopify.com/s/files/1/0431/1829/7245/files/sarirotafinasixibasedosas.pdf' being the first identified. The document body, though heavily corrupted, contains text related to the lure and the malicious URL. 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=twin+xl+platform+bed+diy
    • http://files.pmgagolf.com/uploads/1/3/1/4/131452806/f0e4a0270318.pdf
    • http://lilad.theallinallministries.com/uploads/1/3/1/6/131606349/4d9f73725b4e079.pdf
    • http://files.bellaacupuncture.com/uploads/1/3/2/3/132302824/ligagidok.pdf
    • http://files.harrietrobertsonmua.com/uploads/1/3/2/6/132681812/lotepidez_gosex_nikofuvigi_nifixuzijuzok.pdf
    • http://files.faithfamilyfinancefitness.com/uploads/1/3/1/8/131858108/wagafiwenogig.pdf
    • https://cdn.shopify.com/s/files/1/0431/1829/7245/files/sarirotafinasixibasedosas.pdf
    • https://cdn.shopify.com/s/files/1/0431/0673/0144/files/24881839792.pdf
    • https://cdn.shopify.com/s/files/1/0433/1044/8798/files/zarilo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8523/4338/files/reasoning_ability_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/0089/7440/files/adolescent_problems_and_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0431/6643/3435/files/derabinu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0571/4338/files/jikinodapo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2226/2178/files/50792814317.pdf
    • https://cdn.shopify.com/s/files/1/0433/5026/1911/files/kodefulazeb.pdf
    • https://cdn.shopify.com/s/files/1/0440/6139/3046/files/wilijabir.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_off000062a0.bin
87b977842ce762fa8766137dd33d81618d2fbb75e3da2e833ba4b8317b11896a
pdf-font-stream PDF embedded font (sfnt) at offset 0x62A0 5360 bytes
font_01_sfnt_off000074ce.bin
c63f7afb3a37d1a63edde2529fd0e61d82ad56eee8f1680206cc2224d50555b1
pdf-font-stream PDF embedded font (sfnt) at offset 0x74CE 10860 bytes