Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0b8ce1417062e69…

MALICIOUS

PDF

41.6 KB Created: 2020-08-30 05:43:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1e8ba8364bab3b7753183bce573a5d44 SHA-1: ffa64ce6f1312fa061a594f24ebd8686f08027b0 SHA-256: f0b8ce1417062e6966365fb85f1da89a745d8739a712be2532708b50dbb6739a
152 Risk Score

Malware Insights

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

The PDF was flagged as malicious by an ML classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs pointing to external resources. The primary malicious URL identified is https://ttraff.cc/wix?keyword=test+de+raven+ficha+tecnica, which is likely used to redirect users to a phishing or malware distribution site.

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=test+de+raven+ficha+tecnica
    • https://static.usrfiles.com/ugd/b8c837_104429310784427597f36086697bba8f.pdf
    • https://static.usrfiles.com/ugd/b8c837_d1691e67d3f74d2f8ec86ef5bf96dfe1.pdf
    • https://static.usrfiles.com/ugd/b8c837_5585123bf035493487342ad74903efbb.pdf
    • https://static.usrfiles.com/ugd/238140_10d4742f61ea4535947f1827e6fdeb0f.pdf
    • https://static.usrfiles.com/ugd/b8c837_d3d2a1a2504d4d1ebb71b3d09e395610.pdf
    • https://cdn.shopify.com/s/files/1/0434/6331/1520/files/90613833751.pdf
    • https://cdn.shopify.com/s/files/1/0433/8266/9475/files/advanced_d_d_monster_manual_1977.pdf
    • https://cdn.shopify.com/s/files/1/0433/5340/7646/files/lunidut.pdf
    • https://cdn.shopify.com/s/files/1/0432/8692/1382/files/associer_fichiers_en_ligne.pdf
    • https://cdn.shopify.com/s/files/1/0432/6467/1909/files/wowobese.pdf
    • https://cdn.shopify.com/s/files/1/0462/4308/6487/files/ac_odyssey_lieutenant_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pujofupokutesigitugut.pdf
    • https://static.usrfiles.com/ugd/b8c837_8e7c60119e7a47c4bb0677d44fedcb88.pdf
    • https://static.usrfiles.com/ugd/b8c837_3bf7263bb05a4677a9a3ee81b261f641.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_off000065ac.bin
52f4ae93840830a4351f341c1c13ea9bb3d8b763dde172901e478ddb29d564ba
pdf-font-stream PDF embedded font (sfnt) at offset 0x65AC 5088 bytes
font_01_sfnt_off000076ed.bin
608e30b02705c582ea0386cba6cf49e03f639d80f4a9c723b0113cbe945043bb
pdf-font-stream PDF embedded font (sfnt) at offset 0x76ED 10268 bytes