Malicious PDF — malware analysis report

Static analysis result for SHA-256 f27e2dc8dba33bd4…

MALICIOUS

PDF

42.7 KB Created: 2020-08-04 03:13:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8167e316142b822a80d815cbe93df17e SHA-1: 6336cc56b8f2efdbddc589b3960dba95eb798217 SHA-256: f27e2dc8dba33bd4d0229668af5b13576d17cb547c4bdc64410db8ada7536cc0
120 Risk Score

Malware Insights

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

The PDF document contains a deceptive lure for a 'basic computer course' which, upon interaction, redirects the user to a malicious URL (ttraff.cc). This indicates a phishing or social engineering attack aimed at tricking users into visiting compromised or malicious sites. The presence of numerous external links, many pointing to Shopify domains hosting PDFs, suggests a link farm or SEO poisoning tactic to improve search engine visibility for the malicious lure.

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.cc/pify?keyword=basic+computer+course+pdf+free+download
    • http://files.dwpboutique.com/uploads/1/3/1/3/131382387/waxukuxulidawo_kigorisepotunij.pdf
    • http://files.pclions.org/uploads/1/3/1/4/131483147/zepixizixa_wekenadozap_rugixapage.pdf
    • http://files.ombeautysalon.com/uploads/1/3/0/7/130776022/gaxoneru.pdf
    • http://files.ludloweboyssoccer.com/uploads/1/3/1/0/131070402/rosevebewagadegibuwu.pdf
    • http://files.thelauraxadventures.com/uploads/1/3/1/3/131379894/9441184.pdf
    • https://cdn.shopify.com/s/files/1/0431/0230/6468/files/sunit.pdf
    • https://cdn.shopify.com/s/files/1/0430/6314/8706/files/xitizufonaguzamojamidez.pdf
    • https://cdn.shopify.com/s/files/1/0432/4173/4312/files/24337551914.pdf
    • https://cdn.shopify.com/s/files/1/0432/2754/5757/files/72660850408.pdf
    • https://cdn.shopify.com/s/files/1/0430/9575/2864/files/kupukidemexudo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6254/1982/files/dadofubovowitoxereke.pdf
    • https://cdn.shopify.com/s/files/1/0435/9687/3885/files/bogemafumebevesalojawed.pdf
    • https://cdn.shopify.com/s/files/1/0439/1829/5195/files/65486629235.pdf
    • https://cdn.shopify.com/s/files/1/0431/1557/7504/files/45017649277.pdf
    • https://cdn.shopify.com/s/files/1/0435/3690/8439/files/95195493195.pdf
    • https://cdn.shopify.com/s/files/1/0437/1188/9573/files/59136144508.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_off00006797.bin
e6e1f304feba3bb755d3f9c02a470ba31ccf4a1c0873cc5583f244776d2f2301		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6797 5444 bytes
font_01_sfnt_off00007a12.bin
df9cf97451d57c0f131679fe934a38f63b53f58c88f5995761534b2afe2df7ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A12 10604 bytes

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