Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cd0eaef3e4c0ffc…

MALICIOUS

PDF

46.0 KB Created: 2020-08-04 16:45:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5df7df5aaa30f274378ba6030c987530 SHA-1: fc6570f2288eebe897f206c8d00b2ca4623a7e2a SHA-256: 0cd0eaef3e4c0ffcbcc187db8e18a3842602f7d7c3129a3b8a0af4044d4daf3c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF 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 heavily obfuscated, contains text suggesting it is an economics review packet, likely a lure. The presence of embedded URLs and the malicious redirector indicate an attempt to lead the user to malicious infrastructure, potentially for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=acdc+economics+ultimate+review+packet+pdf
    • http://files.misscheviouscrystals.com.au/uploads/1/3/1/4/131438840/fugesiro.pdf
    • http://files.dailyritualskin.com/uploads/1/3/0/7/130775102/b5956dda1b17f.pdf
    • http://files.bachmanbackstagebling.com/uploads/1/3/2/3/132303245/zofinunoxorilasalik.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/0432/0154/files/marble_balst_online.pdf
    • https://cdn.shopify.com/s/files/1/0429/8529/1937/files/pitexoje.pdf
    • https://cdn.shopify.com/s/files/1/0434/6835/7796/files/voxilawudimu.pdf
    • https://cdn.shopify.com/s/files/1/0436/9124/5733/files/22092838418.pdf
    • https://cdn.shopify.com/s/files/1/0440/8590/3525/files/synonym_for_patriot.pdf
    • https://cdn.shopify.com/s/files/1/0437/1510/0826/files/emon_and_frankee.pdf
    • https://cdn.shopify.com/s/files/1/0438/6727/5424/files/mini_dirt_bikes_game.pdf
    • https://cdn.shopify.com/s/files/1/0441/4645/8776/files/java_programs_games.pdf
    • https://cdn.shopify.com/s/files/1/0431/7433/0517/files/wolf_team_hack_2015.pdf
    • https://cdn.shopify.com/s/files/1/0437/0087/9515/files/what_is_my_ip._com.pdf
    • https://cdn.shopify.com/s/files/1/0430/2890/6138/files/bitobegifexosata.pdf
    • https://cdn.shopify.com/s/files/1/0437/6382/6849/files/59744965401.pdf
    • https://cdn.shopify.com/s/files/1/0431/2177/0656/files/18990047801.pdf
    • https://cdn.shopify.com/s/files/1/0438/1586/2434/files/xegikexofugataxakajal.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070e0.bin
22522f1aca2efb3c3cad0a8cb78a96c0d2fd9aeb50a2412496e078747232d988		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70E0 5508 bytes
font_01_sfnt_off0000839c.bin
75db27aba694e28f8b913673d1da3756e16f1a41be01d01ba271ce8e571dd094		 pdf-font-stream PDF embedded font (sfnt) at offset 0x839C 11240 bytes

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