Malicious PDF — malware analysis report

Static analysis result for SHA-256 6eb758e8908e98b6…

MALICIOUS

PDF

56.5 KB Created: 2020-08-04 04:10:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6eb78532fced738d97db4afa982ae3fe SHA-1: a6d49a1e948d76ef0703959560dda426e9d60a7e SHA-256: 6eb758e8908e98b6905172e4626592bc27d2c5835c532f01e995ea809829e98d
154 Risk Score

Malware Insights

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

The PDF contains numerous links, with one specifically identified as a malicious redirector pointing to 'ttraff.cc'. This suggests the document is designed to lead users to malicious websites, likely for phishing or malware distribution. The ML classifier strongly supports the malicious nature of this PDF.

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/pify?keyword=adaptive+reuse+of+industrial+buildings+pdf
    • http://wudix.laurennelsonyoga.com/uploads/1/3/0/7/130738524/a43d23aebefa.pdf
    • http://files.materials4artists.com/uploads/1/3/1/4/131438313/wuroxibuxa.pdf
    • http://files.alltexserviceco.com/uploads/1/3/2/7/132712333/dodujonasugam-jojilosak.pdf
    • http://files.marchesmakers.co.uk/uploads/1/3/1/4/131483069/9bd3a1a8c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84574839703.pdf
    • https://cdn.shopify.com/s/files/1/0429/5193/4108/files/lopibuti.pdf
    • https://cdn.shopify.com/s/files/1/0448/9058/7291/files/ford_e350_repair_manual_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0449/5346/9083/files/map_of_benue_state.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/latibor.pdf
    • https://cdn.shopify.com/s/files/1/0430/8258/0130/files/kubakenalatejakokefovig.pdf
    • https://cdn.shopify.com/s/files/1/0428/6060/9692/files/medical_receptionist_training.pdf
    • https://cdn.shopify.com/s/files/1/0427/4244/8295/files/bukisubodedim.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/minecraft_lord_of_the_rings_server.pdf
    • https://cdn.shopify.com/s/files/1/0432/2869/2643/files/tofexabojowe.pdf
    • https://cdn.shopify.com/s/files/1/0433/3443/4969/files/lunaluxenepesubigebofo.pdf
    • https://cdn.shopify.com/s/files/1/0434/6370/4729/files/8589347037.pdf
    • https://cdn.shopify.com/s/files/1/0432/6572/0486/files/moxezalojubebanaxi.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_off00009fd0.bin
883947bc51a94d18ee4422cd15351b288430e2cd6bdb8032b86883154cdf347e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FD0 5400 bytes
font_01_sfnt_off0000b240.bin
d982496d7bbaa87dce8276d6f7c523c7d4a33485c78e9287eee140fef53bdc3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB240 10096 bytes

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