Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2ae9afb0f9b5d5e…

MALICIOUS

PDF

48.9 KB Created: 2020-08-22 13:05:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c6fc1515ae5a5923034534ccfb05da0 SHA-1: ba507f3f00ff80439f38de65e5ace1938c9dfe0e SHA-256: f2ae9afb0f9b5d5e4bc40efdd9803a48394e788bca930b7deede32c2e77f8967
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be a lure for search engine optimization, specifically related to 'Helen of Troy movie parents guide'. This suggests a phishing or scam attempt. The PDF also exhibits characteristics of a link farm, with numerous external links, further supporting a malicious intent to redirect users to potentially harmful sites.

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/pify?keyword=helen+of+troy+movie+parents+guide
    • http://files.disabilitymanagmentsolutions.ca/uploads/1/3/1/4/131437149/7b70cc.pdf
    • http://files.commonscience.net/uploads/1/3/0/8/130813851/1902728.pdf
    • https://cdn.shopify.com/s/files/1/0437/9285/9293/files/suminedategitatepimak.pdf
    • https://cdn.shopify.com/s/files/1/0433/8542/1978/files/argumentative_writing_techniques.pdf
    • https://cdn.shopify.com/s/files/1/0429/0487/9271/files/nogejavunozowuwesopujug.pdf
    • https://cdn.shopify.com/s/files/1/0431/6263/2360/files/wegofowo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1554/4737/files/bratislava_attractions_map.pdf
    • https://cdn.shopify.com/s/files/1/0431/5919/1712/files/femesejetusi.pdf
    • https://cdn.shopify.com/s/files/1/0440/9258/8184/files/job_order_costing_system.pdf
    • https://cdn.shopify.com/s/files/1/0437/4842/5889/files/42519654278.pdf
    • https://cdn.shopify.com/s/files/1/0431/8602/8708/files/backstepping_controller.pdf
    • https://cdn.shopify.com/s/files/1/0437/4993/3208/files/dabujovozujivigotunav.pdf
    • https://cdn.shopify.com/s/files/1/0429/7919/7081/files/veterozib.pdf
    • https://cdn.shopify.com/s/files/1/0432/3885/0719/files/panasonic_hc-_v770_manual.pdf
    • https://cdn.shopify.com/s/files/1/0447/9008/7829/files/mpbse_12th_admit_card_supplementary.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_off000081e1.bin
c79cd8409970e9f766adb42b6e84de475d00d93d77e98901ff653cfb23f4b436
pdf-font-stream PDF embedded font (sfnt) at offset 0x81E1 5484 bytes
font_01_sfnt_off00009477.bin
89159608edd887ff10897909c1f779cb406168f8f0e5ec775715259cc7ac4526
pdf-font-stream PDF embedded font (sfnt) at offset 0x9477 9848 bytes