Malicious PDF — malware analysis report

Static analysis result for SHA-256 00ec582a4b882bf6…

MALICIOUS

PDF

46.0 KB Created: 2020-09-04 01:19:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ea325bdca20b7439821a410138eca7a5 SHA-1: 67467649a48bc8a258b27b410bd55b4bc15d0a16 SHA-256: 00ec582a4b882bf6acd2c15b9b5d83e3d51b608437b5ac03e3eff901d1a54fec
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical link pointing to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text that, combined with the heuristic 'SE_ADVANCE_FEE_SCAM_LURE', suggests a classic advance-fee fraud scheme. The primary malicious URL identified is https://ttraff.club/wix?keyword=bootstrap.+min.+css++github.

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.club/wix?keyword=bootstrap.+min.+css++github
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0436/0205/1235/files/58189298822.pdf
    • https://cdn.shopify.com/s/files/1/0435/5103/1447/files/android_tv_box_remote_control_codes.pdf
    • https://cdn.shopify.com/s/files/1/0433/8073/6156/files/bidezatux.pdf
    • https://static.usrfiles.com/ugd/b8c837_b6e6887b4b144017b5aa2f4f87ceb8a5.pdf
    • https://static.usrfiles.com/ugd/a2ebd8_c3e5a3d177f7430b9092726b3180dbae.pdf
    • https://static.usrfiles.com/ugd/e643da_e2b1cde1545c437b8f7f439f542c182d.pdf
    • https://static.usrfiles.com/ugd/b8c837_7f19fccfaa3946ce9e5e591fb39577f8.pdf
    • https://static.usrfiles.com/ugd/b8c837_2dc492b0b03549709b0c968f3d0f165c.pdf
    • https://static.usrfiles.com/ugd/b8c837_abffd63dda0b4bf8ad2058abcf4aeb5a.pdf
    • https://static.usrfiles.com/ugd/91e123_fcef2b7d743847579116049290108239.pdf
    • https://static.usrfiles.com/ugd/08fe48_275e2d76e28c4801a4a216da25105cf7.pdf
    • https://static.usrfiles.com/ugd/b8c837_ae2353dbd8ff440390744f326616ca06.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_off0000709e.bin
2514c714797367d19514fd102e324e2cc37f91abb46ad40a532c01ffc7d32f0c
pdf-font-stream PDF embedded font (sfnt) at offset 0x709E 5536 bytes
font_01_sfnt_off0000834e.bin
d9add9ff9b3ae2f5964eaabad1fbe43ef2c6f4fb6cc1c164aa380a6f293b44e5
pdf-font-stream PDF embedded font (sfnt) at offset 0x834E 11212 bytes