Malicious PDF — malware analysis report

Static analysis result for SHA-256 154081e1079a34b3…

MALICIOUS

PDF

44.8 KB Created: 2020-08-30 10:57:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 24f0f145e459d15d87f81d3e73c47e0c SHA-1: fac0a624cd2503f34b453d02523f836adbfd9579 SHA-256: 154081e1079a34b39ee5278be07a6e8f4c2fc96bf20262511a5fa58875fe362d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links, one of which, https://ttraff.com/wix?keyword=dfo+mistress+guide, is identified as a malicious redirector. The document also features a large number of external PDF links, suggesting a link farm, with the primary example being a Shopify URL. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to lure users to harmful content.

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=dfo+mistress+guide
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/6007/5427/files/canonical_form_linear_programming_examples.pdf
    • https://cdn.shopify.com/s/files/1/0436/2692/2146/files/42300285430.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81256704061.pdf
    • https://cdn.shopify.com/s/files/1/0432/3062/5950/files/7855240187.pdf
    • https://cdn.shopify.com/s/files/1/0434/9234/3970/files/36855729625.pdf
    • https://cdn.shopify.com/s/files/1/0430/3850/7169/files/bloody_roar_2_psp_iso.pdf
    • https://cdn.shopify.com/s/files/1/0435/4483/8303/files/raxulegafilamokikogomun.pdf
    • https://cdn.shopify.com/s/files/1/0434/2274/4741/files/soduduzewewox.pdf
    • https://cdn.shopify.com/s/files/1/0462/2214/7737/files/corbin_russwin_mortise_lock_template.pdf
    • https://static.usrfiles.com/ugd/3b7182_0db084c6e727445eaceabbcb88a502e4.pdf
    • https://static.usrfiles.com/ugd/221f3a_adbdf5a6d0bc4731b782e9f414fd09c6.pdf
    • https://static.usrfiles.com/ugd/b8c837_6192210d03ee4cd6b583e85abc2038a0.pdf
    • https://static.usrfiles.com/ugd/b8c837_9152adba514f4e8fa39da77a059d4bd7.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1402562920.pdf
    • https://cdn.shopify.com/s/files/1/0432/1440/5793/files/kugatefoferoli.pdf
    • https://cdn.shopify.com/s/files/1/0434/9027/9574/files/sosejor.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_off0000724e.bin
15eed707c672f35570152edda4dd1fbe403c0898137f4d366a984852635b7874
pdf-font-stream PDF embedded font (sfnt) at offset 0x724E 4984 bytes
font_01_sfnt_off0000832f.bin
1fa559f5c1d488aa95b71f91f693e4a76aeb8d04d9bcf57524723554dac8a045
pdf-font-stream PDF embedded font (sfnt) at offset 0x832F 10412 bytes