Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d0aba845f271169…

MALICIOUS

PDF

56.9 KB Created: 2020-08-31 14:30:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a392f324b416e2ddb4a31abb54f68f22 SHA-1: f7d56fe9ddde4c338d8386250de915cd6ae8dd6c SHA-256: 0d0aba845f271169175e2038b732148e64e1774300315942f87611ade3713a6d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for an advance-fee scam lure, presenting itself as a league table form to trick users. It embeds multiple links, one of which, 'https://ttraff.cc/pify?keyword=bulgaria+first+professional+league+table+form', is flagged as a malicious redirector. The document's structure and embedded links strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=bulgaria+first+professional+league+table+form
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/fd3290_6cdf1a87c0ec4bf2b694c3448c9237f7.pdf
    • https://static.usrfiles.com/ugd/ec0c41_54bc0ad63b234b13a481a682e43dc9a4.pdf
    • https://static.usrfiles.com/ugd/60933b_383fdfdddc2245b4a580c28ba0d8c37a.pdf
    • https://static.usrfiles.com/ugd/e2f197_cbca971e47df460d9ffd7b91d1e122b7.pdf
    • https://static.usrfiles.com/ugd/cc14e4_7001f62df31d4fd8b85840d3c4ded0fe.pdf
    • https://static.usrfiles.com/ugd/b8c837_f138cd7fbb4b470eb7a06957bac291b7.pdf
    • https://cdn.shopify.com/s/files/1/0433/5573/4166/files/jitunoxoduvakip.pdf
    • https://cdn.shopify.com/s/files/1/0439/0184/5659/files/merge_sort_code.pdf
    • https://cdn.shopify.com/s/files/1/0429/6183/0037/files/agile_mind_algebra_2_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0431/3006/0955/files/89478479740.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a009.bin
773c94d83ecef0a1463d041379ec1d8769e246fd7e245b3a2f40f730331054d2
pdf-font-stream PDF embedded font (sfnt) at offset 0xA009 5408 bytes
font_01_sfnt_off0000b25f.bin
f647030f975d1ec3fd62facd345a23bab3c3d6ccfd7ff8887985b25f9172c698
pdf-font-stream PDF embedded font (sfnt) at offset 0xB25F 10720 bytes