Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee062738dcaa417c…

MALICIOUS

PDF

42.0 KB Created: 2020-08-19 05:21:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b10268089cf43b23c7b7c133e246f222 SHA-1: 927ea92e94366d85da75ec4c76c1a5a711e51b8c SHA-256: ee062738dcaa417c79f441266741ced548596e17d1e339e1d7bb97e311e62a2a
128 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'. The document body, though heavily obfuscated, contains the same URL and a lure related to 'Android file transfer'. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm designed to obscure the ultimate destination. The primary malicious URL is 'https://ttraff.com/pify?keyword=android+file+transfer+alternative+2018'.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=android+file+transfer+alternative+2018
    • http://files.sanjoseluxurytransportation.com/uploads/1/3/1/4/131412032/giwose.pdf
    • http://tuzagu.sahiphopawards.com/uploads/1/3/1/4/131437069/vagelitelojigowin.pdf
    • http://files.rainierdrainageimprovementco.com/uploads/1/3/0/8/130874587/mukeleviji-pepikekiwotim-mutezanesupun.pdf
    • https://cdn.shopify.com/s/files/1/0436/8649/4361/files/talafebutak.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/winoxilerudizixadejugo.pdf
    • https://cdn.shopify.com/s/files/1/0438/0337/7824/files/zakeli.pdf
    • https://cdn.shopify.com/s/files/1/0436/0755/6258/files/chung_kai_lai_a_course_in_probability_theory.pdf
    • https://cdn.shopify.com/s/files/1/0436/4668/1248/files/bolide.pdf
    • https://cdn.shopify.com/s/files/1/0434/3093/6733/files/70558992189.pdf
    • https://cdn.shopify.com/s/files/1/0432/6300/0734/files/rizinufube.pdf
    • https://cdn.shopify.com/s/files/1/0431/4952/5149/files/jifoveviwutizimusawok.pdf
    • https://cdn.shopify.com/s/files/1/0435/4962/2431/files/wosejid.pdf
    • https://cdn.shopify.com/s/files/1/0438/2097/4242/files/58382261836.pdf
    • https://cdn.shopify.com/s/files/1/0428/5893/8531/files/gugigujojepoxuri.pdf
    • https://cdn.shopify.com/s/files/1/0435/9385/9231/files/winefawunazikake.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_off000066a7.bin
3b43819060ebf74a578b3ca00ee33c2c0028c791e6dd956c4e28b875bb55ea16
pdf-font-stream PDF embedded font (sfnt) at offset 0x66A7 5468 bytes
font_01_sfnt_off0000794f.bin
7ed0df9435c2148717b9e37a7ca06685400dc50c0eb1d33644c64a923405add5
pdf-font-stream PDF embedded font (sfnt) at offset 0x794F 9904 bytes