Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c026fe536c9bb27…

MALICIOUS

PDF

36.6 KB Created: 2020-08-31 04:18:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1744432e8c6abd69df217d75215c4bd2 SHA-1: 95c92accfed297477153cd69829e24910bb7e6af SHA-256: 7c026fe536c9bb279665554745e6466068df55efa2c137b04be359a7c5d5012f
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link that redirects to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and embedded URLs suggest a lure for a 'free download' of 'The Flavor Bible', which is a common social engineering tactic. The PDF_SEO_LINK_FARM heuristic further indicates a large number of external links, likely for SEO manipulation or to distribute malicious 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.link/wix?keyword=the+flavor+bible+free+download
    • https://cdn.shopify.com/s/files/1/0435/8373/3915/files/93262194623.pdf
    • https://cdn.shopify.com/s/files/1/0434/3260/7894/files/69057835516.pdf
    • https://cdn.shopify.com/s/files/1/0430/2517/0595/files/images_in_photoshop.pdf
    • https://cdn.shopify.com/s/files/1/0431/6738/3713/files/sewakibebironemeligodivav.pdf
    • https://cdn.shopify.com/s/files/1/0429/8866/7034/files/nugufalufaretavekoj.pdf
    • https://cdn.shopify.com/s/files/1/0430/0115/1651/files/tetufaxavabemododi.pdf
    • https://cdn.shopify.com/s/files/1/0434/5449/6921/files/thing_thing_arena_unblocked_games.pdf
    • https://cdn.shopify.com/s/files/1/0429/9846/4661/files/41402046282.pdf
    • https://cdn.shopify.com/s/files/1/0430/0118/4417/files/minuxa.pdf
    • https://cdn.shopify.com/s/files/1/0431/7043/1125/files/68179549708.pdf
    • https://cdn.shopify.com/s/files/1/0436/6349/1222/files/3066847506.pdf
    • https://cdn.shopify.com/s/files/1/0428/1414/4675/files/zexonulitu.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005108.bin
64fd409c691e8212a3b5a6d81c0196fa16ac3b8d4295eabb8d3f8189db027aca
pdf-font-stream PDF embedded font (sfnt) at offset 0x5108 5056 bytes
font_01_sfnt_off0000624b.bin
8b1a8f24dec45736f489bb1d6a3f6239da3b25e93cacd7b723172c12bd9e9325
pdf-font-stream PDF embedded font (sfnt) at offset 0x624B 10388 bytes