Malicious PDF — malware analysis report

Static analysis result for SHA-256 06d5bd99b1a1fc07…

MALICIOUS

PDF

41.3 KB Created: 2020-09-01 06:27:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b7bb17d1e023a9af968ce5cbf3d56a39 SHA-1: 753d0ac3e64a66fd8c8905ce517ba8f8bafd6a3f SHA-256: 06d5bd99b1a1fc07b3648a29f08596f21839f0ff2d8eb3684754d182d1038b45
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to "https://ttraff.me/wix?keyword=sieve+analysis+soil+test+pdf". This URL is likely used to redirect users to a malicious site, potentially for phishing or malware distribution. The PDF also contains a large number of external PDF links, characteristic of a link farm, further supporting the malicious intent.

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.me/wix?keyword=sieve+analysis+soil+test+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/b8c837_b6c22901e6da41bbab0e1eb284237a08.pdf
    • https://static.usrfiles.com/ugd/cbe7f7_8bf4609114a240c9ada89b88ed0dcd6c.pdf
    • https://static.usrfiles.com/ugd/9b5f63_6e7cac22027346ce87f9b26f193b9b04.pdf
    • https://static.usrfiles.com/ugd/b8c837_bb6552309b7e46e9aa6fbf016a6e1a8d.pdf
    • https://static.usrfiles.com/ugd/b8c837_d5604d5f2d7741efba6f247756932ddc.pdf
    • https://static.usrfiles.com/ugd/4826f5_cda0e9a124db43ec889662594e161c0b.pdf
    • https://static.usrfiles.com/ugd/b8c837_762b6dbac868490a9eb1d82683b1ecc1.pdf
    • https://cdn.shopify.com/s/files/1/0437/5537/2695/files/os_runescape_fletching_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/8333/3786/files/degijuwawaxexoromin.pdf
    • https://cdn.shopify.com/s/files/1/0430/0832/7829/files/74646343039.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000057a4.bin
b264ac47f995b2302ed6bfd2804c312fb6cec46cf81953096a55befdd0f47911
pdf-font-stream PDF embedded font (sfnt) at offset 0x57A4 4992 bytes
font_01_sfnt_off000068b7.bin
da9d2422ff1f75cb038430ef1c22f6358d22c347d011a566daad626fffb91ec7
pdf-font-stream PDF embedded font (sfnt) at offset 0x68B7 9964 bytes
font_02_sfnt_off00008ac2.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x8AC2 4324 bytes