Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d5c3efe2e23ec2c…

MALICIOUS

PDF

45.1 KB Created: 2020-08-07 09:41:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 462d725634136023275338d8ae3e6a12 SHA-1: 219dac1426bfa24ac463e2aefc229e9f43da20b1 SHA-256: 2d5c3efe2e23ec2cad37ec84c11cc5fe2fe31f44163489ade1539d43d88cef16
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains embedded links that point to a known malicious redirector, ttraff.com. The document body, though heavily obfuscated, contains text suggesting a worksheet title, likely a lure. The presence of numerous external links, many pointing to Shopify domains, indicates a link farm strategy to obscure the malicious destination. No scripts were extracted from this sample.

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.com/wb?keyword=finding%20limits%20algebraically%20worksheet%20with%20answers
    • http://files.rahimafrooz-ips.com/uploads/1/3/1/4/131407708/b565a.pdf
    • http://files.jimvogl.com/uploads/1/3/1/3/131381003/9f49bcb4a.pdf
    • http://files.osgood-lagrone.com/uploads/1/3/1/0/131069887/rojivuziriper-wawoze-xogeruvud.pdf
    • https://cdn.shopify.com/s/files/1/0441/2129/2952/files/wwe_theme_song_2015.pdf
    • https://cdn.shopify.com/s/files/1/0433/8801/0659/files/vanufimoxijiduzomuna.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37394074323.pdf
    • https://cdn.shopify.com/s/files/1/0431/9235/2928/files/factoring_polynomials_practice_worksheet_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/4023/4902/files/koxuxotef.pdf
    • https://cdn.shopify.com/s/files/1/0432/7027/5236/files/lefalojopofiwejibujagit.pdf
    • https://cdn.shopify.com/s/files/1/0433/1097/3083/files/fivezazowuga.pdf
    • https://cdn.shopify.com/s/files/1/0428/2135/3635/files/45241848828.pdf
    • https://cdn.shopify.com/s/files/1/0432/8800/2710/files/82204083937.pdf
    • https://cdn.shopify.com/s/files/1/0427/4411/9462/files/givazupebirufejisolop.pdf
    • https://cdn.shopify.com/s/files/1/0429/8250/6647/files/22371201122.pdf
    • https://cdn.shopify.com/s/files/1/0431/6220/6357/files/jutosewirazekubetamive.pdf
    • https://cdn.shopify.com/s/files/1/0430/9650/6521/files/spiro_kostof_a_history_of_architecture.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_off0000710b.bin
291c2e925c15589cb60b7c013ffb56aae907a3cd9d5a68da7d987f9f590887e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x710B 5704 bytes
font_01_sfnt_off00008461.bin
475beb9ee5635457305dce502be569c440caf14398b1d2dc85ce37bc8e6b065a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8461 10192 bytes

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