Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f8482f6379e403f…

MALICIOUS

PDF

43.2 KB Created: 2020-08-27 17:00:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 030aea5eaf2dedb34280ede086299a14 SHA-1: 3a12acc4f90f5e5391c43b6ad5dc60760392574c SHA-256: 5f8482f6379e403f360f00375357d906a75e107ddf089eb8531f039ba8e05b51
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to potentially malicious redirectors or SEO link farms. The primary malicious link identified is 'https://ttraff.me/pify?keyword=dragon+age+inquisition+rogue+armor+schematics', which is flagged as a redirector to malicious infrastructure. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users to external 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.me/pify?keyword=dragon+age+inquisition+rogue+armor+schematics
    • http://files.saujs.co.za/uploads/1/3/2/6/132681824/8694376.pdf
    • http://files.aogshoetique.com/uploads/1/3/1/0/131070820/xubuxovupa-dawova-wezudada.pdf
    • http://xekilafa.xmomentsports.com/uploads/1/3/1/3/131383652/jusipizower.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/9231/9139/files/mejores_aplicaciones_android_de_pago_2019.pdf
    • https://cdn.shopify.com/s/files/1/0434/8005/5958/files/puwutimebuleduverina.pdf
    • https://cdn.shopify.com/s/files/1/0428/7958/2374/files/5026505836.pdf
    • https://cdn.shopify.com/s/files/1/0439/2235/8427/files/93834893536.pdf
    • https://cdn.shopify.com/s/files/1/0434/2480/9122/files/cer_science_examples.pdf
    • https://cdn.shopify.com/s/files/1/0434/2261/3655/files/27074975078.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/loxigisegi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4061/2262/files/13366162636.pdf
    • https://cdn.shopify.com/s/files/1/0432/7460/0598/files/76944335883.pdf
    • https://cdn.shopify.com/s/files/1/0435/4798/4027/files/acr_contrast_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/6028/0982/files/90310541928.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_off00006aea.bin
65153e97828961f3c5dfc0f9c7f87d589b9d9f15db39c9f68cba81853b3b186c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AEA 5308 bytes
font_01_sfnt_off00007cc6.bin
5a5dab5775dcea0c8eff3be48c948a2d977c9a0cc5f47548452febee24366a62
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CC6 10208 bytes