Malicious PDF — malware analysis report

Static analysis result for SHA-256 92c9ed1c440b1981…

MALICIOUS

PDF

60.4 KB Created: 2020-08-06 19:47:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46703d16e4c02d76f9af51237f944574 SHA-1: 220cf4573eb607b1191ab4b6b7b4206c96379ffe SHA-256: 92c9ed1c440b1981b1cfb7ff37bb9214b4df181897f2fa79f7b92b8bb3474591
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=it+support+engineer+interview+questions+pdf'. This URL is presented within the document body, disguised as a lure for IT support interview questions. The file also exhibits characteristics of a link farm, embedding numerous external PDF links, many of which point to Shopify domains. The primary malicious link is the most critical IOC.

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=it+support+engineer+interview+questions+pdf
    • http://bubozisa.thymesquareweddingsandparties.com/uploads/1/3/1/4/131407995/saxuvipek.pdf
    • http://xumadime.shieldpatterns.com/uploads/1/3/0/8/130814229/5688276.pdf
    • http://files.edengabay.com/uploads/1/3/0/8/130813714/022e6ebaa.pdf
    • https://cdn.shopify.com/s/files/1/0433/4436/3678/files/derifakinumafipibadofu.pdf
    • https://cdn.shopify.com/s/files/1/0430/7792/7072/files/90065069795.pdf
    • https://cdn.shopify.com/s/files/1/0431/7180/7391/files/93889653765.pdf
    • https://cdn.shopify.com/s/files/1/0438/8772/2648/files/800608501.pdf
    • https://cdn.shopify.com/s/files/1/0430/2195/9325/files/20933695568.pdf
    • https://cdn.shopify.com/s/files/1/0438/3784/9762/files/sojebibufamodalinenatop.pdf
    • https://cdn.shopify.com/s/files/1/0440/1404/3294/files/human_anatomy_for_medical_students.pdf
    • https://cdn.shopify.com/s/files/1/0433/3033/8966/files/jovebitu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5428/4450/files/4114775396.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/55079075607.pdf
    • https://cdn.shopify.com/s/files/1/0436/1610/8707/files/the_illusion_of_life_disney_animation_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0440/5483/9461/files/arithmetic_and_geometric_sequence_test.pdf
    • https://cdn.shopify.com/s/files/1/0431/8153/9483/files/65206866622.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_off0000af9f.bin
e929129ba959922edd3636c6dba8c16c02c71dd8fd08e36eb6f7e085c27b0959		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF9F 5180 bytes
font_01_sfnt_off0000c15e.bin
dbd401e40ddc9bbb16fa45a9cce595c92b20375cb5ba76ff7b625e8ba937c0bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC15E 10352 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.