Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6d3907ccc15d406…

MALICIOUS

PDF

42.3 KB Created: 2020-08-08 01:38:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e9263707d8e30d8e7210b4953a44b49 SHA-1: 331cb246ac4178320ca0d642498aa26e2fff18c8 SHA-256: e6d3907ccc15d406990d1c4456644f55d1f8ea0e6aba18cfff9f512246a4bbb9
120 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many of which point to benign Shopify domains, but one critical link directs to a known malicious redirector. The document body, though partially corrupted, contains the text 'Arduino mini schematic pdf' and the malicious URL, suggesting a lure to trick users into downloading potentially harmful content. The presence of a malicious redirector indicates an attempt to lead the user to a further stage of attack.

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=arduino+mini+schematic+pdf
    • http://files.charlotteareabridalshows.com/uploads/1/3/1/8/131871817/9950090.pdf
    • http://files.howardfamilyroots.com/uploads/1/3/1/0/131070476/nalotu.pdf
    • http://files.newellbooks.com/uploads/1/3/0/8/130813797/vapujulo_rajeker_vewidufe.pdf
    • https://cdn.shopify.com/s/files/1/0433/9249/9877/files/cctv_camera_price_list_in_delhi.pdf
    • https://cdn.shopify.com/s/files/1/0439/2153/9240/files/19194477272.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bebupikisanomagidilu.pdf
    • https://cdn.shopify.com/s/files/1/0427/8029/5334/files/bamibepiwasutomijaraguk.pdf
    • https://cdn.shopify.com/s/files/1/0440/5864/0549/files/low_cholesterol_food_chart.pdf
    • https://cdn.shopify.com/s/files/1/0431/7026/7291/files/gold_gym_trainer_420.pdf
    • https://cdn.shopify.com/s/files/1/0430/5197/4818/files/77282404670.pdf
    • https://cdn.shopify.com/s/files/1/0431/7364/2389/files/letipazisu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5238/3907/files/nofakasamezaleweke.pdf
    • https://cdn.shopify.com/s/files/1/0430/7730/4484/files/mawozimuwivaru.pdf
    • https://cdn.shopify.com/s/files/1/0439/2170/3067/files/abdominal_stretching_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/pimakad.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_off00006342.bin
e3f3bed1bda4ebc424b1194cae8797f00d27b1af78d9b5a3852b2ca5b205e325		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6342 5352 bytes
font_01_sfnt_off0000754e.bin
d00bb9d152249e4a087a013f20fd38a58708c129c97e4d82c4fcfecd2835f49f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x754E 12336 bytes

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