Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fb8e02cdba06b68…

MALICIOUS

PDF

47.4 KB Created: 2020-08-31 08:09:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f2e94566839569b4a2831ea16fca7bb SHA-1: d2d45c43de5e384ba9c0aef2c9fb4b040e3d1498 SHA-256: 5fb8e02cdba06b6885007db6fd59bdce2a0f2448cf8af8a174393744f97a24e9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, with one identified as a malicious redirector pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains a reference to the same malicious URL. This suggests the PDF is designed to redirect users to malicious infrastructure, likely for phishing or malware delivery, leveraging a lure related to 'Warhammer 2'.

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.com/wix?keyword=warhammer+2+dark+elves+guide
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0436/2282/6142/files/anthropometric_measurement_techniques.pdf
    • https://cdn.shopify.com/s/files/1/0434/2130/2935/files/texas_state_driving_test_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/0058/6649/files/51146555624.pdf
    • https://cdn.shopify.com/s/files/1/0431/7039/8357/files/wolujilexefipunogapebe.pdf
    • https://cdn.shopify.com/s/files/1/0431/7826/2689/files/wejunivoseki.pdf
    • https://cdn.shopify.com/s/files/1/0433/0445/2246/files/red_camouflage_free_vector.pdf
    • https://cdn.shopify.com/s/files/1/0432/3832/6432/files/animeflv_apk_para_android.pdf
    • https://cdn.shopify.com/s/files/1/0431/9900/4827/files/nopixu.pdf
    • https://cdn.shopify.com/s/files/1/0428/8564/4447/files/laped.pdf
    • https://cdn.shopify.com/s/files/1/0431/2930/7287/files/xasuzufuz.pdf
    • https://static.usrfiles.com/ugd/b8c837_e89481e684a14465a2f29f9b678df186.pdf
    • https://static.usrfiles.com/ugd/2274a7_dddcc4f84ab84039b6d5668cc2d5e982.pdf
    • https://static.usrfiles.com/ugd/63022f_089ba1315a4d423986327c4f230bd353.pdf
    • https://static.usrfiles.com/ugd/b8c837_5d7761434a5449a08151a7cdeeb9cc05.pdf
    • https://static.usrfiles.com/ugd/b8c837_b53e9525bd1749be8c2034ce0e38c3fb.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_off00007afc.bin
01f9b9dfa22e7dee09ae470f77f41690632c9e72df267c0e45d64af1f9a316ab
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AFC 5508 bytes
font_01_sfnt_off00008da5.bin
64dedee698ddb678e377f35c6bdab2aafd2262ccbaee0ea357be0d52386c3d99
pdf-font-stream PDF embedded font (sfnt) at offset 0x8DA5 10292 bytes