Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f69e05523d92296…

MALICIOUS

PDF

44.4 KB Created: 2020-08-24 18:00:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e3b2aeab3b4faf45aecb24fdbbb6072 SHA-1: b636a79dc1c3d496657b10802c31ba27348017a6 SHA-256: 4f69e05523d9229638759cc82d2f864a34cbac883179d51821ad4d9055f30982
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is used to obscure the ultimate destination. The document body, though heavily obfuscated, contains references to 'Android 9 lg g6 release' and a URL that appears to be part of this lure. The primary function appears to be directing users to potentially malicious external sites.

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=android+9+lg+g6+release
    • http://files.techterryscholars.org/uploads/1/3/0/7/130739119/degez_xitiritenoxa_komuposib_wuzir.pdf
    • http://toxefenul.turtlerivertownship.com/uploads/1/3/0/7/130775734/3ea8dd05e31a2.pdf
    • http://gotajago.erikawhitney.com/uploads/1/3/0/9/130969192/bdf4373.pdf
    • http://files.baanekspres1995.com/uploads/1/3/1/3/131379035/gugapedo_remefemoren_ravorewojoliv_zuwozamiwimop.pdf
    • https://cdn.shopify.com/s/files/1/0435/2950/2874/files/jomibofiwebagajasineperon.pdf
    • https://cdn.shopify.com/s/files/1/0429/2342/5955/files/29942618692.pdf
    • https://cdn.shopify.com/s/files/1/0428/8951/1068/files/480i_vs_480p.pdf
    • https://cdn.shopify.com/s/files/1/0430/8484/1124/files/sight_words_worksheets_2nd_grade.pdf
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/54079213568.pdf
    • https://cdn.shopify.com/s/files/1/0430/4096/4759/files/alien_worker_song.pdf
    • https://cdn.shopify.com/s/files/1/0429/7703/4399/files/inter_ethnic_conflict_in_ethiopia.pdf
    • https://cdn.shopify.com/s/files/1/0435/5633/9871/files/kukeduzil.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42539854631.pdf
    • https://cdn.shopify.com/s/files/1/0435/1541/2632/files/gueranger_liturgical_year.pdf
    • https://cdn.shopify.com/s/files/1/0434/6642/4486/files/apprentice_to_a_himalayan_master.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_off00006365.bin
f54738b99865cfc91e1ae02b16fb9179d9cf8ca99c07a345ca59ac93c676bb38
pdf-font-stream PDF embedded font (sfnt) at offset 0x6365 5000 bytes
font_01_sfnt_off0000744e.bin
83ba81fc9d7abe6aeb33b737c3417194a475d5f55d88e326c4131f20437941dc
pdf-font-stream PDF embedded font (sfnt) at offset 0x744E 10112 bytes
font_02_sfnt_off000096d8.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x96D8 4324 bytes