Malicious PDF — malware analysis report

Static analysis result for SHA-256 daef108d3b1b3ec6…

MALICIOUS

PDF

38.1 KB Created: 2020-08-30 14:51:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e40f1586352eda806c2e128caa360293 SHA-1: f2e860550ede8577fc6e2a483fe3166b51daf64c SHA-256: daef108d3b1b3ec600d20f4c108000211e4b861c0c62be7a458a0051043540f9
154 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded URLs, forming a link farm. One of these URLs, https://ttraff.cc/wix?keyword=ati+radeon+2400, is identified as a malicious redirector. The document's structure and the presence of this malicious link strongly suggest a phishing or malware distribution attempt, leveraging a large number of seemingly benign links to obscure the malicious one. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=ati+radeon+2400
    • https://cdn.shopify.com/s/files/1/0429/1808/4771/files/degenijirezevozuwo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8982/1845/files/xovosawa.pdf
    • https://cdn.shopify.com/s/files/1/0432/6532/7262/files/newaregisegerutotamofame.pdf
    • https://cdn.shopify.com/s/files/1/0440/5238/1846/files/kaxonagijozuvuka.pdf
    • https://static.usrfiles.com/ugd/39cb9d_e0183e3eb472413d9d5fbaa06aa99799.pdf
    • https://static.usrfiles.com/ugd/daca0d_9bc14b5ce50c4d64a9b2194e822d564a.pdf
    • https://static.usrfiles.com/ugd/b8c837_a79fbc4fff6349d8a55de628fba08f0e.pdf
    • https://static.usrfiles.com/ugd/97aff7_87eac6b8e0574eeb97885a81827edb4f.pdf
    • https://static.usrfiles.com/ugd/f09a9d_345a791cb45044e6ab3f90e66b5d2ace.pdf
    • https://static.usrfiles.com/ugd/b8c837_5c3f0db402aa4661add6d593c1d3be1b.pdf
    • https://static.usrfiles.com/ugd/353d00_31eb6e0f22a745859c05f9d488f88ad0.pdf
    • https://static.usrfiles.com/ugd/b8c837_ef332902125d44f09dab24f6d572cbe8.pdf
    • https://static.usrfiles.com/ugd/bb13a2_5649f19231f9473eb81664b2659e737d.pdf
    • https://static.usrfiles.com/ugd/599f1c_b904de7b72a146a38dc4b15de3aa352c.pdf
    • https://static.usrfiles.com/ugd/8b2c09_7be04254913d49cba59ce3e12df0e9d6.pdf
    • https://static.usrfiles.com/ugd/c7ef1a_44034e07f02f49b58fb4fe165ea9659c.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_off00005323.bin
7b881784b3664ecb8fa9b3c2ee8c25be9a14c321effaabeac73c3c88e7a6e6ac
pdf-font-stream PDF embedded font (sfnt) at offset 0x5323 4960 bytes
font_01_sfnt_off0000640b.bin
73276c39477ae645333fe199f8d4950551545d6fafc8737e8bc02562715a9ed0
pdf-font-stream PDF embedded font (sfnt) at offset 0x640B 12236 bytes