Malicious PDF — malware analysis report

Static analysis result for SHA-256 816952796a18629a…

MALICIOUS

PDF

46.7 KB Created: 2020-08-17 02:15:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89803a2c793a53d606b06d491e616dff SHA-1: daf8d6ba971a81e6de378af39b5f7ba029dcf162 SHA-256: 816952796a18629a0842335cb9d76d183050bd1581d4623bf33ee445426f59aa
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.com/pify?keyword=hollywood+actor+rock+movie', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it's a primary lure. The presence of numerous other PDF links, many hosted on Shopify, indicates a potential link farm or SEO manipulation tactic 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.com/pify?keyword=hollywood+actor+rock+movie
    • http://files.selcssociety.com/uploads/1/3/0/8/130874544/3564dff567c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/kidinaresafabenofefevisuf.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lekutaxawiwasutoxojopelor.pdf
    • https://cdn.shopify.com/s/files/1/0429/8162/1919/files/42918262920.pdf
    • https://cdn.shopify.com/s/files/1/0434/3414/7989/files/potufegiroka.pdf
    • https://cdn.shopify.com/s/files/1/0448/0725/8269/files/farmall_h_service_manual_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/6619/6122/files/c_how_to_program_8th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0432/9360/6046/files/2566856122.pdf
    • https://cdn.shopify.com/s/files/1/0455/6573/9173/files/bazaar_new_movie_video_song.pdf
    • https://cdn.shopify.com/s/files/1/0429/1854/3523/files/63819583216.pdf
    • https://cdn.shopify.com/s/files/1/0437/7952/2714/files/37283926190.pdf
    • https://cdn.shopify.com/s/files/1/0437/7811/3697/files/kupapimakasufewi.pdf
    • https://cdn.shopify.com/s/files/1/0432/5287/5432/files/marketing_phd_thesis.pdf
    • https://cdn.shopify.com/s/files/1/0432/9183/6566/files/tufagojametaxeraze.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_off000078bc.bin
c06cfc157f34d5095fd8f729c547aace07fd7ebcd7fb298816d3c4738bf747b1
pdf-font-stream PDF embedded font (sfnt) at offset 0x78BC 5188 bytes
font_01_sfnt_off00008a62.bin
dce5f484dc2dc630f61cfafd574f208fecb9476d44c62c959635174a841dc4ce
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A62 10292 bytes