Malicious PDF — malware analysis report

Static analysis result for SHA-256 0308e93a30307fcc…

MALICIOUS

PDF

64.3 KB Created: 2020-07-25 11:50:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 967d8fb89900352a65bb77660528f2bc SHA-1: a4b15983f651509d0b8757eea9797817c6b28978 SHA-256: 0308e93a30307fccb8c881a7fe0eed35a793cc26b361028e87ee47bfd5e65333
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to a harmful destination. The heuristic 'PDF_SEO_LINK_FARM' suggests the PDF is part of a larger network of linked documents, likely for SEO manipulation or to distribute malicious content. The ML classifier strongly flags this PDF as malicious.

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=fallout+4+mod+making+guide
    • http://files.sunnyonthemic.com/uploads/1/3/0/8/130874493/worofawesub_wasit_miwefo.pdf
    • http://files.whatsnextreport.com/uploads/1/3/0/9/130969218/dugupik.pdf
    • http://files.southmountainheritage.org/uploads/1/3/1/4/131437143/6122240.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/8092/4840/files/vepuzixaresexizobe.pdf
    • https://cdn.shopify.com/s/files/1/0437/1313/4757/files/19979094796.pdf
    • https://cdn.shopify.com/s/files/1/0429/9912/0033/files/95492864853.pdf
    • https://cdn.shopify.com/s/files/1/0429/0864/7580/files/61059766912.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/baludugosutagaxoreforodul.pdf
    • https://cdn.shopify.com/s/files/1/0428/5811/9334/files/zajugaromipavutuwesu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fedixudarat.pdf
    • https://cdn.shopify.com/s/files/1/0427/8291/6767/files/dujaduxafugabiwafotiv.pdf
    • https://cdn.shopify.com/s/files/1/0432/8544/6824/files/90582802408.pdf
    • https://cdn.shopify.com/s/files/1/0432/5838/0446/files/jukuro.pdf
    • https://cdn.shopify.com/s/files/1/0428/2603/9452/files/delimubaden.pdf
    • https://cdn.shopify.com/s/files/1/0433/2909/3784/files/55177536923.pdf
    • https://cdn.shopify.com/s/files/1/0431/5771/7152/files/73750336750.pdf
    • https://cdn.shopify.com/s/files/1/0430/6681/8721/files/xaravefo.pdf
    • https://cdn.shopify.com/s/files/1/0438/0708/0608/files/56689100074.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b22d.bin
94a9948fac951b82b7e372ac56de1ab381924fc7a2f0d647a2f0f98c0725af10		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB22D 4860 bytes
font_01_sfnt_off0000c2a2.bin
c9b5c4904a063eda2fd006e21c0d11b7d9e09ba17605c18bcc17455d537c1e8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC2A2 3120 bytes
font_02_sfnt_off0000cf28.bin
b5e0a9cb99ac298e992c7d57d284a6ad0bd5b7c5491e58414a45a85d895b763f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCF28 10728 bytes

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