Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a5953eea4d411b7…

MALICIOUS

PDF

41.7 KB Created: 2020-08-17 14:44:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c4bf310739afe0a43e90a63b68a44d2 SHA-1: bdffb3860f800ee49e4e29d7923dcd3590061f7b SHA-256: 8a5953eea4d411b737b5159000a7993f30840f6ea8f4cf90ce484eb428b9cac5
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=plotting+coordinates+on+a+map+worksheet'. This indicates the document's primary purpose is to redirect the user to a potentially harmful site. The presence of numerous other links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to obscure the malicious destination. No scripts were extracted, but the PDF structure and embedded links strongly suggest a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=plotting+coordinates+on+a+map+worksheet
    • http://files.rockwehrmann.com/uploads/1/3/0/7/130738848/kigowizexizamujapi.pdf
    • http://vopakula.thearconline.org/uploads/1/3/0/8/130814238/cf69ca82716b461.pdf
    • http://magasexi.thomasrupertcharliebeal.com/uploads/1/3/1/3/131383646/14d421242c.pdf
    • http://files.choteautlc.com/uploads/1/3/1/4/131437766/9731777.pdf
    • http://rafoti.metzmachinesllc.com/uploads/1/3/0/8/130874655/simawe_zipegade_joromumedovilif.pdf
    • https://cdn.shopify.com/s/files/1/0434/8579/0358/files/68224314899.pdf
    • https://cdn.shopify.com/s/files/1/0438/4607/4525/files/rocket_propulsion_elements_6th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0435/3776/0408/files/lemaje.pdf
    • https://cdn.shopify.com/s/files/1/0431/7901/6360/files/jorog.pdf
    • https://cdn.shopify.com/s/files/1/0436/4081/5774/files/41636973844.pdf
    • https://cdn.shopify.com/s/files/1/0431/7678/8134/files/alimentos_alcalina.pdf
    • https://cdn.shopify.com/s/files/1/0432/3485/3021/files/wiwap.pdf
    • https://cdn.shopify.com/s/files/1/0428/8082/7558/files/35819849411.pdf
    • https://cdn.shopify.com/s/files/1/0450/2913/0404/files/bisugadevibiwerof.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lafiku.pdf
    • https://cdn.shopify.com/s/files/1/0427/6705/7063/files/radedinixogape.pdf
    • https://cdn.shopify.com/s/files/1/0434/7750/0056/files/bevenekoxedaluxozizup.pdf
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/after_book_4_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/3902/2494/files/jixajipave.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_off000063d7.bin
2a11a6b292cc669d209dc17985c604114abef3c46fe8fedc9ccf501b3437523c
pdf-font-stream PDF embedded font (sfnt) at offset 0x63D7 5644 bytes
font_01_sfnt_off000076e6.bin
83b8881e3ba8b595c754d8471c17131475c6b70c4ee61b81ce77d03e14f280c2
pdf-font-stream PDF embedded font (sfnt) at offset 0x76E6 10256 bytes