Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4c09e7b956d2701…

MALICIOUS

PDF

33.9 KB Created: 2020-08-31 11:46:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 19e8751fbce9127f6a1cf61c58503ce1 SHA-1: 446c6e65df443ad8be53b4cb5a1e467acb8d6ddf SHA-256: f4c09e7b956d270158527197765c2c5f6563f1e5ef53d525dbe3ca0c84f9e1a0
152 Risk Score

Malware Insights

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

The PDF document contains a lure text referencing a 'Bmw e46 radio manual pdf' and embeds numerous links. One of these links, 'https://ttraff.cc/wix?keyword=bmw+e46+radio+manual+pdf', is identified as a malicious redirector. The document's structure and the presence of a link farm suggest a phishing or redirection attempt to a malicious site. No scripts were extracted, limiting further analysis of payload delivery.

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=bmw+e46+radio+manual+pdf
    • https://static.usrfiles.com/ugd/b8c837_fdac5216c419411fbf86e9ccc374eabb.pdf
    • https://static.usrfiles.com/ugd/b8c837_cee92d8717b9425ca8309b0d9d641a30.pdf
    • https://static.usrfiles.com/ugd/24853a_7935fe7b700f4c118edbea34662082cb.pdf
    • https://static.usrfiles.com/ugd/9edd50_cb57e550275e4a46bc6609087ed92fad.pdf
    • https://static.usrfiles.com/ugd/c3f88d_ea9915b45a804f529738980d44d5d5a3.pdf
    • https://cdn.shopify.com/s/files/1/0432/7155/3189/files/gotalutomivepi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6498/3703/files/dekagetefiwozozugi.pdf
    • https://cdn.shopify.com/s/files/1/0428/2328/6940/files/zesemalogovegi.pdf
    • https://cdn.shopify.com/s/files/1/0433/6828/4319/files/23432213894.pdf
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/kerala_psc_biology_questions.pdf
    • https://cdn.shopify.com/s/files/1/0427/9785/8972/files/45226218620.pdf
    • https://cdn.shopify.com/s/files/1/0439/0351/6824/files/gmat_practice_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0427/3651/7286/files/13456538433.pdf
    • https://cdn.shopify.com/s/files/1/0434/5374/3270/files/administrao_financeira_para_pequenas_empresas.pdf
    • https://cdn.shopify.com/s/files/1/0440/7400/8726/files/highway_476_traffic_report.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_off0000469b.bin
293c89808f443ccd025a5627d77c265bc4a4cc01f53f88586277944b5c3d3af6
pdf-font-stream PDF embedded font (sfnt) at offset 0x469B 5392 bytes
font_01_sfnt_off000058f2.bin
0a6f12af6d00759c3c3a38e7e971dd2ad48d5b19431bab484ff99a9a4059ea80
pdf-font-stream PDF embedded font (sfnt) at offset 0x58F2 9992 bytes