Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bdae4b3730beedb…

MALICIOUS

PDF

45.3 KB Created: 2020-08-22 19:06:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f39e56aaa345b64cba7f27da18ab9dd SHA-1: 7222c1f955aa97ea7416f725645233ef051f04fd SHA-256: 3bdae4b3730beedb087b7f8f4fd495793560b565eaf232146b610ffc197d8465
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though partially corrupted, contains text related to 'Aluminium alloy sheet thickness' and the malicious URL, suggesting a lure for users interested in such topics. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to further malicious content.

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=aluminium+alloy+sheet+thickness
    • http://files.lingsgardenstore.com/uploads/1/3/1/6/131637419/siliju.pdf
    • http://gexubavo.allthingsginamarie.com/uploads/1/3/1/0/131071157/vibugazukafaji-komedixu-ligimogi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2702/1480/files/64445211193.pdf
    • https://cdn.shopify.com/s/files/1/0434/8038/3653/files/turovajipolupakipozepi.pdf
    • https://cdn.shopify.com/s/files/1/0436/2010/6404/files/interview_questions_and_answers_for_structural_engineer.pdf
    • https://cdn.shopify.com/s/files/1/0429/2119/7735/files/74778054748.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bivunamu.pdf
    • https://cdn.shopify.com/s/files/1/0439/3353/2315/files/unwell_matchbox_20.pdf
    • https://cdn.shopify.com/s/files/1/0435/3441/8075/files/federal_itemized_deductions_worksheet_2017.pdf
    • https://cdn.shopify.com/s/files/1/0435/6866/0643/files/83611497484.pdf
    • https://cdn.shopify.com/s/files/1/0431/4179/1900/files/wukix.pdf
    • https://cdn.shopify.com/s/files/1/0430/2592/4249/files/export_without_bleed_indesign.pdf
    • https://cdn.shopify.com/s/files/1/0434/0734/3779/files/92061404983.pdf
    • https://cdn.shopify.com/s/files/1/0430/2857/8467/files/86763995657.pdf
    • https://cdn.shopify.com/s/files/1/0434/8110/4541/files/repoki.pdf
    • https://cdn.shopify.com/s/files/1/0451/4054/1593/files/41864220197.pdf
    • https://cdn.shopify.com/s/files/1/0437/5222/6974/files/uruvam_full_movie_tamilrockers.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_off000072e1.bin
a918e4de02807ad1899b0aac7b14282b4710b37bd74caed1b817fe4bc339cfff
pdf-font-stream PDF embedded font (sfnt) at offset 0x72E1 5100 bytes
font_01_sfnt_off00008412.bin
cf1b4eca122d91b639152fdd07dd81adf960d99a411ffbcc9a38b44fa2faeac7
pdf-font-stream PDF embedded font (sfnt) at offset 0x8412 10896 bytes