Malicious PDF — malware analysis report

Static analysis result for SHA-256 5968416dc1cc5374…

MALICIOUS

PDF

46.1 KB Created: 2020-08-25 11:25:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b3b8037389691495f867e1e8bcdcfe6c SHA-1: 4f7d7ed982b03511868e68990f609ade895d9651 SHA-256: 5968416dc1cc537409cd7863f741a76c430d10bc160e019e7185c00e5a84e930
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This indicates an attempt to direct users to malicious infrastructure. The document body, though heavily obfuscated, contains the same URL, reinforcing its role as a lure. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm designed to improve search engine ranking for the lure content.

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=alimentos+con+alto+contenido+de+potasio+pdf
    • http://files.hybrex.org/uploads/1/3/1/4/131406507/4294682.pdf
    • http://files.frontrunnerbooks.com/uploads/1/3/0/7/130740127/238d271698fcd5.pdf
    • http://files.janithaphotography.com/uploads/1/3/1/0/131070497/c5623f5e3.pdf
    • http://files.readingaustralianrulesfootball.org/uploads/1/3/1/4/131406437/wurepateter-mubuwibawo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/93366398369.pdf
    • https://cdn.shopify.com/s/files/1/0436/1922/1666/files/wemibunawisexa.pdf
    • https://cdn.shopify.com/s/files/1/0428/7542/0835/files/ruzanojuxew.pdf
    • https://cdn.shopify.com/s/files/1/0431/7180/7381/files/93943187543.pdf
    • https://cdn.shopify.com/s/files/1/0429/5363/8044/files/xixogamesuwobitib.pdf
    • https://cdn.shopify.com/s/files/1/0437/7100/3037/files/masavirened.pdf
    • https://cdn.shopify.com/s/files/1/0438/6983/1323/files/d_d_blank_character_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0440/6280/2085/files/biramofojovulati.pdf
    • https://cdn.shopify.com/s/files/1/0429/6874/4099/files/m._a._p_full_form_hotel.pdf
    • https://cdn.shopify.com/s/files/1/0431/6125/6096/files/5009612844.pdf
    • https://cdn.shopify.com/s/files/1/0438/8985/2571/files/dragon_slayer_osrs_low_level_guide.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006146.bin
a471f489070082ad725651e790748d43b755d167d9c715af5f80d78ae6d2133a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6146 4984 bytes
font_01_sfnt_off0000721f.bin
aec4c946eeba20cf89f06e15d00b1ef2c9ee5906fdadb0ab51b8548d2053293c
pdf-font-stream PDF embedded font (sfnt) at offset 0x721F 14156 bytes
font_02_sfnt_off00009d51.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x9D51 4324 bytes