Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f2be46ad00d2062…

MALICIOUS

PDF

43.8 KB Created: 2020-08-22 09:22:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b5a748370b72933ea72c75f4d633f74 SHA-1: 1379bcb1cbebb902cee714c134c58d82538a5746 SHA-256: 0f2be46ad00d20627a8752a1c82e1a03dc4ac7a57d211df1b439c338e335c93d
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic identifying a link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=the+blind+side+book+pdf+free'. Another heuristic indicates a large number of external PDF links, suggesting a link farm for SEO manipulation or to distribute malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful sites.

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.ru/pify?keyword=the+blind+side+book+pdf+free
    • http://files.dirtyharryserotics.com/uploads/1/3/1/0/131069819/8a5670.pdf
    • http://bulabak.iewad.org/uploads/1/3/1/4/131453540/9203477.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/3851/5098/files/55001012699.pdf
    • https://cdn.shopify.com/s/files/1/0431/8094/9658/files/poremofonatazevugojeb.pdf
    • https://cdn.shopify.com/s/files/1/0428/9452/4579/files/37399054216.pdf
    • https://cdn.shopify.com/s/files/1/0436/8482/3205/files/le_liberalisme_politique.pdf
    • https://cdn.shopify.com/s/files/1/0432/0365/7887/files/gta_sa_radio_stations.pdf
    • https://cdn.shopify.com/s/files/1/0432/8102/3132/files/67490702990.pdf
    • https://cdn.shopify.com/s/files/1/0429/9869/4049/files/fofipuvetulixodu.pdf
    • https://cdn.shopify.com/s/files/1/0430/6924/3549/files/sadokujelexakijibalagelov.pdf
    • https://cdn.shopify.com/s/files/1/0428/9842/3967/files/30250917401.pdf
    • https://cdn.shopify.com/s/files/1/0428/4727/3116/files/garivozevigulewanipuj.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_off0000607e.bin
a529af8bd9561e52a64878714215916c980f0ab803653c087f8569c16c363571
pdf-font-stream PDF embedded font (sfnt) at offset 0x607E 4780 bytes
font_01_sfnt_off00007097.bin
13e3e84b4aa4f08064a4a5f63607063f0679bcec21badabf34f570e03f1e9185
pdf-font-stream PDF embedded font (sfnt) at offset 0x7097 10552 bytes
font_02_sfnt_off00009491.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9491 4324 bytes