PDF malware analysis — malicious · 426a7a26e8643228

MALICIOUS

PDF

72.9 KB Created: 2020-08-07 23:04:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 59a111b96b098d3be1f35b87d6d89812 SHA-1: 504353f7ac77d4b4d87106afe5bd6b960f0d5212 SHA-256: 426a7a26e86432288c5ebca402174b61360c35f1c013c08fc8b76c38a94fc4a8

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm and a malicious redirector, indicating a phishing or scam attempt. The primary malicious URL, https://ttraff.ru/pify?keyword=bcom+1st+year+financial+accounting+question+paper+pdf, is designed to lure users by appearing to offer academic content. The document body, though heavily obfuscated, contains references to the same URL, reinforcing the malicious intent. The presence of numerous external PDF links suggests an attempt to distribute malicious content or engage in SEO manipulation for malicious purposes.

Heuristics 3

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.
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.ru/pify?keyword=bcom+1st+year+financial+accounting+question+paper+pdf
- http://files.teamrusscher.com/uploads/1/3/2/8/132815343/zakuvejuvonerug.pdf
- http://files.rcantech.com/uploads/1/3/0/8/130813042/wajobikitesel.pdf
- http://files.readnis.com/uploads/1/3/1/4/131438362/gadoze_vagozirowopeja.pdf
- http://files.oldbaldyhuntclub.com/uploads/1/3/0/8/130874598/7147837.pdf
- https://cdn.shopify.com/s/files/1/0427/8370/3206/files/defisetaxi.pdf
- https://cdn.shopify.com/s/files/1/0428/0687/0183/files/73616315543.pdf
- https://cdn.shopify.com/s/files/1/0434/1678/0956/files/latin_suffixes.pdf
- https://cdn.shopify.com/s/files/1/0438/5649/4757/files/steininger_hematology_free_download.pdf
- https://cdn.shopify.com/s/files/1/0448/3717/5456/files/github_readme_folder_structure.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/25424470269.pdf
- https://cdn.shopify.com/s/files/1/0429/8565/2375/files/lupuxe.pdf
- https://cdn.shopify.com/s/files/1/0429/9954/6009/files/22791207271.pdf
- https://cdn.shopify.com/s/files/1/0433/7781/9802/files/72478543383.pdf
- https://cdn.shopify.com/s/files/1/0430/2965/9797/files/84539538299.pdf
- https://cdn.shopify.com/s/files/1/0430/3486/9921/files/49998659407.pdf
- https://cdn.shopify.com/s/files/1/0431/3592/6434/files/nasubilexotugabulu.pdf
- https://cdn.shopify.com/s/files/1/0431/6132/1621/files/multivariable_calculus_ron_larson.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e217.bin` `804be43ac0990e6ea08fd1764a96a295510b26020a0935ca513791cc77425f28`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE217	5804 bytes
`font_01_sfnt_off0000f5c9.bin` `e0b3edca548cede0ed50fb3ace40463aa49d3399825ba266fe1867959a8b8d1c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF5C9	9400 bytes

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