Malicious PDF — malware analysis report

Static analysis result for SHA-256 26f058e92a737d33…

MALICIOUS

PDF

39.7 KB Created: 2020-08-09 08:00:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65d014c0234e73d96216a7dcb2a30542 SHA-1: 20f5be8e0fe116dec0082202a26e97831d3db278 SHA-256: 26f058e92a737d33447685efe4907bf223832ca339b9282bc342b643ac0f3f7c
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a 'PDF_SEO_LINK_FARM'. The primary malicious link, 'https://ttraff.ru/pify?keyword=ic+cd40106+pdf', is flagged as a redirector to malicious infrastructure. The document body, though heavily obfuscated, also contains this URL, suggesting the document's purpose is to lure users to malicious sites. No scripts were extracted, and the family is undetermined due to the lack of specific indicators.

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=ic+cd40106+pdf
    • http://files.happyistheone.com/uploads/1/3/1/4/131437937/xibepagekimujez-dupilipidil-sabugirugumesi.pdf
    • http://ruzade.farmbuddiesonline.com/uploads/1/3/1/3/131383483/sukovenujunijegavi.pdf
    • http://files.shellyjarvis.com/uploads/1/3/0/9/130969548/1356993.pdf
    • http://files.srmsperformingarts.com/uploads/1/3/1/4/131483327/8934d89145.pdf
    • http://files.ztodorova.net/uploads/1/3/1/3/131382032/07a08.pdf
    • https://cdn.shopify.com/s/files/1/0432/7460/0598/files/mubejadagenatabot.pdf
    • https://cdn.shopify.com/s/files/1/0429/1300/5724/files/analgesik_non_opioid_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0430/8225/2442/files/weduwatirilubemikasap.pdf
    • https://cdn.shopify.com/s/files/1/0447/8307/5477/files/ca_foundation_course_books.pdf
    • https://cdn.shopify.com/s/files/1/0438/6599/7472/files/28882288653.pdf
    • https://cdn.shopify.com/s/files/1/0434/4119/3110/files/76117249087.pdf
    • https://cdn.shopify.com/s/files/1/0437/7152/7330/files/waxatudibagulowularopog.pdf
    • https://cdn.shopify.com/s/files/1/0440/8786/9592/files/37239947696.pdf
    • https://cdn.shopify.com/s/files/1/0435/6076/3555/files/wufinilamimikenevotogep.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_off00005d97.bin
57b8449435ae66dbea1fcff3572e0a3a680626ec2ebb9e365b3e3c4241c61645		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D97 5008 bytes
font_01_sfnt_off00006ecc.bin
1e312dedaa18b950032f0c6d2ab706bf1e094041fa6389fc1a17bde1ad10c3e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ECC 10388 bytes

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