Malicious PDF — malware analysis report

Static analysis result for SHA-256 c10d07827896bde6…

MALICIOUS

PDF

41.3 KB Created: 2020-08-22 20:51:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d05f8bb2d6599e2963d87f6b3d92617a SHA-1: ffcc8c0fbfdc1622943465694a2b587e2f4ae597 SHA-256: c10d07827896bde669ddc4fc105faf3f5dd28feaa70d3beddf5b1155656cdd7b
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. The document body, though partially corrupted, contains text related to 'free word borders templates' and includes the malicious URL. This suggests a social engineering lure to trick users into clicking the link, which likely leads to a malicious payload or phishing 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/pify?keyword=free+word+borders+templates
    • http://nugoduv.campfashionlab.com/uploads/1/3/1/1/131164250/318d13a13ded.pdf
    • http://nekaja.seasonedservices.com/uploads/1/3/1/1/131164250/9314297.pdf
    • http://garof.devinelydesignedproducts.com/uploads/1/3/0/7/130739777/pivuxujobe.pdf
    • http://zesofage.cutekitties4u.com/uploads/1/3/1/3/131381675/bagura_larumaje_rodulufumox_zawotipadur.pdf
    • http://files.kingsporthorses.com/uploads/1/3/1/3/131383553/1742861.pdf
    • https://cdn.shopify.com/s/files/1/0433/7372/3800/files/64206850353.pdf
    • https://cdn.shopify.com/s/files/1/0431/1928/0288/files/46282013621.pdf
    • https://cdn.shopify.com/s/files/1/0434/9391/6837/files/65334239240.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15125842299.pdf
    • https://cdn.shopify.com/s/files/1/0431/5162/2306/files/17538084794.pdf
    • https://cdn.shopify.com/s/files/1/0431/6335/3244/files/aguner_poroshmoni.pdf
    • https://cdn.shopify.com/s/files/1/0437/7994/8705/files/rorosexewidafofuzowabug.pdf
    • https://cdn.shopify.com/s/files/1/0431/1898/5372/files/vukijiseb.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_off00006532.bin
b9914f1fc34e45dca8c4c3c5adf6058e30bf3f4f249fd73537c0f7a81bfbc575
pdf-font-stream PDF embedded font (sfnt) at offset 0x6532 5292 bytes
font_01_sfnt_off00007724.bin
63963e8726ef64fc6b4f86f41f9c4063499d8090363a330effebc474cf427f7f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7724 9740 bytes