Malicious PDF — malware analysis report

Static analysis result for SHA-256 8446aa641cd317a7…

MALICIOUS

PDF

41.3 KB Created: 2020-08-29 05:01:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 12fb5a2e6479827ddcfbc992c58831a8 SHA-1: a7252db0c43ae52e5cc9df4a8cdb4c1ecd6a1d56 SHA-256: 8446aa641cd317a7d09d13359f62232043a3a724a80844830eea7db9b8f8a035
154 Risk Score

Malware Insights

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

This PDF document contains numerous links, including one pointing to a known malicious redirector infrastructure at 'https://ttraff.cc/wix?keyword=john+deere+750+drill+parts'. The document body, though heavily obfuscated, contains text related to 'John Deere 750 drill parts', suggesting a lure for phishing or a scam. The presence of a large number of external PDF links indicates a link farm, likely intended to distribute malicious content or traffic.

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=john+deere+750+drill+parts
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/1348/0354/files/wofupuxetasodorekik.pdf
    • https://cdn.shopify.com/s/files/1/0429/6241/9863/files/rogosinazukumipo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6381/2002/files/66293156074.pdf
    • https://cdn.shopify.com/s/files/1/0439/8238/9406/files/babylon_s_ashes.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93527538138.pdf
    • https://cdn.shopify.com/s/files/1/0431/4519/9784/files/strength_training_anatomy_3rd_edition_free.pdf
    • https://static.usrfiles.com/ugd/b8c837_0b76a687defe4b8bb8b14de33fecf263.pdf
    • https://static.usrfiles.com/ugd/b8c837_d238e8a2d67e4e41911288f40a2d4cc3.pdf
    • https://static.usrfiles.com/ugd/b8c837_a48fdc0217a64b83a2db0a0cd1c1a9d6.pdf
    • https://static.usrfiles.com/ugd/b8c837_388266d1e4a149579eb303dc257b7374.pdf
    • https://cdn.shopify.com/s/files/1/0432/1266/9089/files/petawuriwijapibukadesi.pdf
    • https://cdn.shopify.com/s/files/1/0435/4503/4911/files/37091967255.pdf
    • https://cdn.shopify.com/s/files/1/0435/1574/0314/files/nevubebuzusasub.pdf
    • https://cdn.shopify.com/s/files/1/0430/5901/9933/files/85722195096.pdf
    • https://cdn.shopify.com/s/files/1/0437/8004/6997/files/83374554508.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_off0000637b.bin
662d2f2a0d2ba4ea1a14f6ee839b0beaeed5dca9408db902ba1f3635db450fa5
pdf-font-stream PDF embedded font (sfnt) at offset 0x637B 5384 bytes
font_01_sfnt_off000075bf.bin
d56f4e1cb5291a8336d0d0f6608313d2c098813f46f488255a3a517a59c4306f
pdf-font-stream PDF embedded font (sfnt) at offset 0x75BF 10136 bytes