Malicious PDF — malware analysis report

Static analysis result for SHA-256 8deea99fee1ee810…

MALICIOUS

PDF

49.7 KB Created: 2020-08-31 23:03:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f668bb93a1ef9969d2c3ac6777538c8 SHA-1: d6942255907fad177dd33788952cce30d9021c77 SHA-256: 8deea99fee1ee8107decbb45a3faa70a7c8a6e9d73161630c4079ba9c18558ee
120 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with many links pointing to Shopify domains. One prominent link, however, directs to a known malicious redirector at 'https://ttraff.cc/wix?keyword=apache+maven+3.+5.+4'. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing. The presence of numerous benign-looking links alongside the malicious one is a common tactic to obscure the malicious intent.

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/wix?keyword=apache+maven+3.+5.+4
    • https://cdn.shopify.com/s/files/1/0440/6778/2821/files/vewob.pdf
    • https://cdn.shopify.com/s/files/1/0432/6254/1982/files/wr30m_watch_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/3387/7915/files/bajaj_pulsar_150_bs4_spare_parts_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0433/3027/3448/files/bixby_voice_apk_for_marshmallow.pdf
    • https://cdn.shopify.com/s/files/1/0440/4278/0837/files/examen_cytobactriologique_du_liquide_cphalo_rachidien.pdf
    • https://cdn.shopify.com/s/files/1/0437/6117/2631/files/the_lion_sleeps_tonight_notes.pdf
    • https://cdn.shopify.com/s/files/1/0427/3229/0215/files/86556516311.pdf
    • https://cdn.shopify.com/s/files/1/0433/4052/9816/files/kitab_tadzkirah_ahmadiyah.pdf
    • https://cdn.shopify.com/s/files/1/0431/1806/7866/files/37858223397.pdf
    • https://static.usrfiles.com/ugd/8dde66_f8fe9fe536f840beba26d0ac7ce308a4.pdf
    • https://static.usrfiles.com/ugd/5be868_49f6ce7c15fb483fb9bd74d36a56807a.pdf
    • https://static.usrfiles.com/ugd/b8c837_c35c8bbe53af46c2904789a125a5edd1.pdf
    • https://static.usrfiles.com/ugd/79e0dc_2eb2fe4adf2c41ee8be311e425e40fdd.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6654/files/wulizavopike.pdf
    • https://cdn.shopify.com/s/files/1/0431/2625/9876/files/safixevetefavobevapupemuv.pdf
    • https://cdn.shopify.com/s/files/1/0428/7227/5103/files/69742761303.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/puwojadudabub.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_off00006b02.bin
5996ae071b6ed864cafcdf70708f81108bb529af3a6bb76083e4a1a3b07ed3dc
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B02 4872 bytes
font_01_sfnt_off00007b6d.bin
1526bd709a4940ecccc38711e6e3c8f8d8152c3a9adbc03ea51f93a6954726b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B6D 15812 bytes
font_02_sfnt_off0000abfa.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0xABFA 4324 bytes