Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5b6382e13de4d5d…

MALICIOUS

PDF

41.1 KB Created: 2020-08-23 10:09:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c57d038484167e0d1c95afb46d99b56 SHA-1: f66466a2657a8c91594a7b60f4624d7557e18682 SHA-256: a5b6382e13de4d5d91f85ef25242fd8c721d22314ba06d4e0e784330f506441c
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to mimic search engine results, directing users to a malicious redirector at 'https://ttraff.ru/pify?keyword=walgreens+photo+app+for+android+phone'. This suggests a phishing or scam attempt, likely to lead users to further malicious content or credential harvesting pages. No scripts were extracted, limiting the analysis of direct payload execution.

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=walgreens+photo+app+for+android+phone
    • http://files.wedronecostarica.com/uploads/1/3/0/9/130969855/3fcee.pdf
    • http://xesiwu.dollargeneralpennylist.com/uploads/1/3/1/4/131406352/jejale_reputibub_narisikexafovin.pdf
    • https://cdn.shopify.com/s/files/1/0437/0235/4070/files/vurubipetuzojadufeg.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/walezilufotalenuzodumis.pdf
    • https://cdn.shopify.com/s/files/1/0430/8962/5241/files/labels_avery_5260_template.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/52665001447.pdf
    • https://cdn.shopify.com/s/files/1/0430/0341/2633/files/wejitudezojovovuduwuxo.pdf
    • https://cdn.shopify.com/s/files/1/0428/3095/4655/files/73906672669.pdf
    • https://cdn.shopify.com/s/files/1/0431/5850/3584/files/lafevukinulaxajotamegade.pdf
    • https://cdn.shopify.com/s/files/1/0434/6671/9385/files/texas_driver_license_renewal.pdf
    • https://cdn.shopify.com/s/files/1/0427/8878/2236/files/led_flasher_circuit_using_555_timer_ic.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_off0000658d.bin
12fd5de99bb4d4ac47e56223207365c203a82beaddf5a0a117ce669bdc372b72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x658D 5316 bytes
font_01_sfnt_off0000779d.bin
4982a08e3f1a27039ee7d9d79e724e4d1abbb39c2c711e7b36dc6a542a51984b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x779D 9392 bytes

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