Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0b020ed98840732…

MALICIOUS

PDF

33.9 KB Created: 2020-09-01 02:40:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80daf32543920725b8a2383e59b39570 SHA-1: 7520a6e2364db923fe830c3bbddf0204e293446a SHA-256: f0b020ed98840732b5cba862e4176944f24cc5fa1563270a021d274875c09417
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a PDF SEO link farm. One of these links, https://ttraff.com/wix?keyword=balmain+men%2527+s+size+guide, points to known malicious redirector infrastructure. The document body, though heavily obfuscated, appears to contain references to this URL and other benign-looking PDF files, suggesting a lure to disguise the malicious redirection.

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/wix?keyword=balmain+men%2527+s+size+guide
    • https://static.usrfiles.com/ugd/5360f8_dd94c8153ad247b8815427862c100c15.pdf
    • https://static.usrfiles.com/ugd/ade4e6_d9f3b7e60ef84d8dacaf3d53416c0c86.pdf
    • https://static.usrfiles.com/ugd/0c4177_6ed4987918094719959a067df9aab836.pdf
    • https://cdn.shopify.com/s/files/1/0437/7133/0709/files/kunetuviri.pdf
    • https://cdn.shopify.com/s/files/1/0427/8150/7740/files/17627161056.pdf
    • https://cdn.shopify.com/s/files/1/0434/1517/5335/files/fobizolugi.pdf
    • https://cdn.shopify.com/s/files/1/0438/4204/4066/files/sifebexusabuxogagofuf.pdf
    • https://cdn.shopify.com/s/files/1/0433/4541/2261/files/nidutijepadovede.pdf
    • https://cdn.shopify.com/s/files/1/0438/8651/0232/files/19046908296.pdf
    • https://cdn.shopify.com/s/files/1/0432/1378/3203/files/manaluwadovaf.pdf
    • https://cdn.shopify.com/s/files/1/0440/1001/2837/files/alzheimer_disease.pdf
    • https://cdn.shopify.com/s/files/1/0462/5930/6645/files/20426927572.pdf
    • https://cdn.shopify.com/s/files/1/0438/4918/7493/files/72349637486.pdf
    • https://cdn.shopify.com/s/files/1/0431/2491/6388/files/bollywood_dance_hits_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/6467/1906/files/nick_offerman_american_ham.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_off000047ad.bin
07d27239c853e3abde03d811fe450fac7335c925685ac4eb0ffeffb957391206
pdf-font-stream PDF embedded font (sfnt) at offset 0x47AD 5184 bytes
font_01_sfnt_off0000594c.bin
7f9cf615a06729b41ed292a12e6f93f50d826dd083aed4ab549519f1771b7db8
pdf-font-stream PDF embedded font (sfnt) at offset 0x594C 9784 bytes