Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0574c34e7d33e1d…

MALICIOUS

PDF

44.2 KB Created: 2020-08-25 01:51:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ba5f7df9418c62c10015da1c00d66149 SHA-1: 2ef462bbd14c5af8456723e63d2221ae1dfbd4d5 SHA-256: f0574c34e7d33e1def9db933f3412dd0d9c8cad03ddf4022d9bba7c50a27684a
150 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Fitted mattress sheet set' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of a link farm and a malicious redirector indicates a likely attempt to drive traffic to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=fitted+mattress+sheet+set
    • http://paxubojoj.jaymacchiropractic.com/uploads/1/3/1/4/131453698/6baed.pdf
    • http://files.ktr-tactical.com/uploads/1/3/1/3/131379205/4917809.pdf
    • http://wagarivo.holmesrenovationsandrepairsllc.com/uploads/1/3/1/4/131438500/384386.pdf
    • http://files.peggythomaswrites.com/uploads/1/3/1/4/131438313/xuzopatotobal.pdf
    • http://files.qicultivation.com/uploads/1/3/1/3/131398360/ravotupu-jabekafofulul-vanupumut-kedabikufo.pdf
    • https://cdn.shopify.com/s/files/1/0436/8079/2729/files/jukugejevomuxuxasapote.pdf
    • https://cdn.shopify.com/s/files/1/0436/3137/8590/files/management_aptitude_test_sample_papers.pdf
    • https://cdn.shopify.com/s/files/1/0431/6125/6096/files/xoxikudurero.pdf
    • https://cdn.shopify.com/s/files/1/0428/9921/0407/files/25383187658.pdf
    • https://cdn.shopify.com/s/files/1/0427/5293/4044/files/lusurodokaxunegewizorewif.pdf
    • https://cdn.shopify.com/s/files/1/0435/3366/4420/files/rasoxowazatasexuvewugojuv.pdf
    • https://cdn.shopify.com/s/files/1/0430/2051/7537/files/pussy_saga_cheats.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/gta_4_mac.pdf
    • https://cdn.shopify.com/s/files/1/0432/9468/7400/files/xubotupugupolajipenaf.pdf
    • https://cdn.shopify.com/s/files/1/0432/5274/4356/files/kotpal_invertebrate_zoology.pdf
    • https://cdn.shopify.com/s/files/1/0429/0415/8364/files/b_negative_blood_type_diet.pdf
    • https://cdn.shopify.com/s/files/1/0429/8915/8554/files/vegar.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_off00006e29.bin
def78119f2beb46073909a60b1c0ff7aa76e7018a2dce3791cc86f4dfa4243b1
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E29 4988 bytes
font_01_sfnt_off00007ef3.bin
d6ae0760c92ae6ebfcdf6ce1be803fdab4ca5ab805b2e099d29dbf3ab43a7d0e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF3 10852 bytes