Malicious PDF — malware analysis report

Static analysis result for SHA-256 3548a71b1d049d88…

MALICIOUS

PDF

52.7 KB Created: 2020-08-19 20:54:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b0853df40f7b2ca7ecf6c07d6ad7771 SHA-1: 0c524914dad9e23a4dd13f7c88e32f78d63187c4 SHA-256: 3548a71b1d049d88078ea1dafbcc7fdc91f0f0fc1357fb3dff9fbce83516080d
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is designed to lure users into clicking on deceptive content. The document body, though heavily obfuscated, contains the phrase 'Buttocks pain piriformis' and the malicious URL, suggesting a phishing or scam attempt. The PDF also hosts a large number of external links, many pointing to shopify.com, which is characteristic of SEO link farm tactics to improve search engine ranking for malicious content.

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=buttocks+pain+piriformis
    • http://files.rainsweptgame.com/uploads/1/3/1/6/131606025/vupebazenitoli-feziwegodowikip.pdf
    • http://files.childrensbookconnections.com/uploads/1/3/0/7/130775980/7531550.pdf
    • https://cdn.shopify.com/s/files/1/0431/1184/1958/files/21134783474.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/cdpo_question_paper_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/4933/7507/files/jakafafabavemugixepabino.pdf
    • https://cdn.shopify.com/s/files/1/0431/5598/0439/files/zesuredikogapodakalu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4138/9724/files/bose_soundlink_mini_bluetooth_speaker_iii_manual.pdf
    • https://cdn.shopify.com/s/files/1/0447/6056/3861/files/circumcision_in_the_bible.pdf
    • https://cdn.shopify.com/s/files/1/0433/0641/8331/files/zabaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/larabobed.pdf
    • https://cdn.shopify.com/s/files/1/0429/9961/1553/files/vizisag.pdf
    • https://cdn.shopify.com/s/files/1/0431/0335/5034/files/dawidowosisafo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5452/1758/files/terminator_4_movie.pdf
    • https://cdn.shopify.com/s/files/1/0431/6728/5408/files/59022196677.pdf
    • https://cdn.shopify.com/s/files/1/0433/0265/0014/files/sixetebavem.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_off00008fb4.bin
db6e63ba1591a9a98a6e2fea75c3c9a90abfd2ce1ee3cf746fa2c01767cbbc76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FB4 5244 bytes
font_01_sfnt_off0000a175.bin
79ce0ccf0588bfebc5c3acfe25de2093a5b7c926b4078499be688f56b03e94f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA175 10636 bytes

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