Malicious PDF — malware analysis report

Static analysis result for SHA-256 9055529682c07e34…

MALICIOUS

PDF

45.0 KB Created: 2020-08-31 00:15:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b14b95330347a690198973cb64d2ff98 SHA-1: 143f0c23c43b273a186e043ea3e2e7ba454ba879 SHA-256: 9055529682c07e34abf965934ed8f50585cde013341bd82260df9b3794ed2313
140 Risk Score

Malware Insights

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

The PDF contains a critical heuristic indicating it links to a known malicious redirector, specifically `https://ttraff.com/wix?keyword=acer+v5-+171`. Additionally, it features a large number of external PDF links, many hosted on Shopify and static.usrfiles.com, suggesting a link farm or SEO poisoning tactic. The presence of a callback lure heuristic further supports a phishing or scam-related attack pattern. No scripts were extracted from this sample.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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/wix?keyword=acer+v5-+171
    • https://cdn.shopify.com/s/files/1/0459/2425/3863/files/41684407125.pdf
    • https://cdn.shopify.com/s/files/1/0436/0352/5790/files/41290734547.pdf
    • https://cdn.shopify.com/s/files/1/0433/1238/2117/files/movement_disorders_authors_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/3786/7680/files/wufajipomejijodulupija.pdf
    • https://cdn.shopify.com/s/files/1/0429/2627/6775/files/gavuwotexelafir.pdf
    • https://cdn.shopify.com/s/files/1/0433/3774/4552/files/cellular_respiration_practice_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0433/9249/9877/files/game_of_thrones_trke_dublaj_1_sezon.pdf
    • https://static.usrfiles.com/ugd/eda9ba_7731f1b7e99446bba1fa6a6edb69aafd.pdf
    • https://static.usrfiles.com/ugd/07625c_19146dffcadb4dcbb29e148777a41c3f.pdf
    • https://static.usrfiles.com/ugd/b8c837_145e8deb5d9d470fbe2fac3b242d9a07.pdf
    • https://static.usrfiles.com/ugd/b8c837_17b520230dd540249265e3f1790e9bfc.pdf
    • https://static.usrfiles.com/ugd/b8c837_6aa831ffa1ee41eca5ec82483d40b280.pdf
    • https://static.usrfiles.com/ugd/b8c837_3cc6f02fb8b14d88ac3c5a7bb30b2a08.pdf
    • https://static.usrfiles.com/ugd/b8c837_986d6d3f0bde48f389dc74c1d2969c71.pdf
    • https://static.usrfiles.com/ugd/b8c837_e03b998dd02543e581a86a6f2010f241.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_off000064f4.bin
2cf8bedfc70876eac540790aa4ca45b1a61717a0755fa475e6e5467fe3d44a07
pdf-font-stream PDF embedded font (sfnt) at offset 0x64F4 4152 bytes
font_01_sfnt_off00007323.bin
1957bf451c214f8881372483b3071a90790a95b8a5ef66cdd576728f6259cf0c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7323 12012 bytes
font_02_sfnt_off00009956.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9956 4324 bytes