Malicious PDF — malware analysis report

Static analysis result for SHA-256 face13d10747d32f…

MALICIOUS

PDF

50.2 KB Created: 2020-07-29 17:37:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 14283e59ca91b203a668452a544cfb43 SHA-1: 88f592d6477888b11c461ce88c127089788cee1f SHA-256: face13d10747d32fbe495e95c62807dffff120a8dc44d02d510e2ac47fb1819d
152 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, which is also present in the document body. The ML classifier strongly indicates maliciousness. The document appears to be a lure for a malicious download, disguised as a sports awards PDF. The presence of numerous external links, many hosted on Shopify, suggests a link farm designed to distribute malware or phishing content.

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.cc/pify?keyword=sports+awards+2020+pdf+download
    • http://files.ciarawiegers.com/uploads/1/3/1/4/131453989/sawawu.pdf
    • http://files.studioplumpiano.com/uploads/1/3/1/3/131383497/70178f76b.pdf
    • http://files.royartist.com/uploads/1/3/1/1/131163533/fezibe-kitiw.pdf
    • http://files.honeysweetsugargliders.com/uploads/1/3/1/4/131455903/tolejejurefuvi.pdf
    • http://files.humberantislave.com/uploads/1/3/1/4/131454106/1cca6.pdf
    • http://files.honeysweets
    • https://cdn.shopify.com/s/files/1/0429/1746/2182/files/67664835926.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/sivagafasizeki.pdf
    • https://cdn.shopify.com/s/files/1/0430/3152/7575/files/navasikovutuxebiki.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dedapefe.pdf
    • https://cdn.shopify.com/s/files/1/0427/6623/7852/files/wixaloro.pdf
    • https://cdn.shopify.com/s/files/1/0437/1962/2808/files/jufajanekapusovo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0485/3406/files/84656745429.pdf
    • https://cdn.shopify.com/s/files/1/0427/7954/1671/files/mezoteziwakorurudilak.pdf
    • https://cdn.shopify.com/s/files/1/0434/1684/6488/files/lurokajoji.pdf
    • https://cdn.shopify.com/s/files/1/0432/1830/5179/files/27353781593.pdf
    • https://cdn.shopify.com/s/files/1/0433/9869/3022/files/lerunom.pdf
    • https://cdn.shopify.com/s/files/1/0437/5497/9477/files/24374024618.pdf
    • https://cdn.shopify.com/s/files/1/0432/2381/0203/files/28673959624.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_off00007d7f.bin
646cac1f745ba950692162bf24109d6b7d0fa5d6be01f42676f616b3b5634ec8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D7F 5128 bytes
font_01_sfnt_off00008efa.bin
33cc4a42024e76e61cc3139e0873af0bbef6e7dd15ef15e8fd7d3b5550b57d20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EFA 14344 bytes

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