Malicious PDF — malware analysis report

Static analysis result for SHA-256 67e2efc012e776b1…

MALICIOUS

PDF

42.1 KB Created: 2020-07-25 12:59:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 159b2983eaf26e1fed1860724c8527a2 SHA-1: 3a21c80c1c817f19bb9eea3d349b4ee582aa83ad SHA-256: 67e2efc012e776b1348800f1c111987d46d432d2a858458fe04e8e6db9e86670
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, suggests a lure related to a service manual. The presence of numerous external links, many pointing to Shopify domains hosting PDFs, indicates a likely SEO manipulation or link farm tactic to distribute malicious content or phish users.

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/wb?keyword=moto%20guzzi%20v7%20classic%20service%20manual%20pdf
    • http://files.themilehighmacs.com/uploads/1/3/1/3/131384777/lorizobex.pdf
    • http://files.amtboats.co.uk/uploads/1/3/2/6/132681993/6a1c63.pdf
    • http://files.schumacherbrothersfencing.com/uploads/1/3/1/6/131637169/7855302.pdf
    • http://files.grainsfamilymarket.com/uploads/1/3/0/7/130775647/tusar-kagenimatijukej.pdf
    • http://files.zmagazine.co/uploads/1/3/2/6/132695602/debot.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/3051/9716/files/bufonu.pdf
    • https://cdn.shopify.com/s/files/1/0434/2690/6264/files/volifar.pdf
    • https://cdn.shopify.com/s/files/1/0437/0792/4635/files/21224129932.pdf
    • https://cdn.shopify.com/s/files/1/0431/4952/5156/files/mikotulegulawutaxorexewu.pdf
    • https://cdn.shopify.com/s/files/1/0433/2604/6362/files/tedojoxira.pdf
    • https://cdn.shopify.com/s/files/1/0434/6799/7344/files/lubupuzesaravafebi.pdf
    • https://cdn.shopify.com/s/files/1/0428/4514/3207/files/51737253579.pdf
    • https://cdn.shopify.com/s/files/1/0431/0538/6647/files/tezemepazaxurejo.pdf
    • https://cdn.shopify.com/s/files/1/0430/4204/6103/files/rewilivowub.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/52325197595.pdf
    • https://cdn.shopify.com/s/files/1/0431/0129/0650/files/leluketipolakabitiraf.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_off000066c5.bin
2dcb4c566342e686911669399e946fb7fcdc1e34f142c9401774df8011537eb1
pdf-font-stream PDF embedded font (sfnt) at offset 0x66C5 5552 bytes
font_01_sfnt_off000079ab.bin
48f93c0e92657197f32c817fd0a572dcc0e87c11fc0f94697fe4559b3b6e14b8
pdf-font-stream PDF embedded font (sfnt) at offset 0x79AB 9700 bytes