Malicious PDF — malware analysis report

Static analysis result for SHA-256 168a06d18c4dfd86…

MALICIOUS

PDF

48.4 KB Created: 2020-07-30 10:07:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d0c2d72427c12b5aceabdd66c2ed5a68 SHA-1: 62bfc8e4ed7d96de99054ed2cd52dadd84f76b49 SHA-256: 168a06d18c4dfd86165098c468bdcbd38c402c7b22d350a4f362f30faed352b6
154 Risk Score

Malware Insights

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

The PDF contains numerous links, with one identified as a malicious redirector. The document body, though heavily obfuscated, suggests a lure related to 'budget template pdf free'. The presence of a link farm and a malicious redirector indicates an attempt to drive traffic to potentially harmful sites, likely for phishing or malware delivery. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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=budget+template+pdf+free
    • http://files.palmdigital.org/uploads/1/3/2/6/132695339/dovirak.pdf
    • http://files.oconnordoyle.com/uploads/1/3/2/6/132680813/banamokuraporob.pdf
    • http://files.cooperscrossroad.com/uploads/1/3/1/3/131383456/zilejidofukonez.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/85266534785.pdf
    • https://cdn.shopify.com/s/files/1/0428/0179/1132/files/fopiputipitepebiguwitel.pdf
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/nifiwemalawojifasoru.pdf
    • https://cdn.shopify.com/s/files/1/0430/3316/5986/files/zumefivijupaveziduxirader.pdf
    • https://cdn.shopify.com/s/files/1/0428/3593/5388/files/lawufivonigogupasuwe.pdf
    • https://cdn.shopify.com/s/files/1/0427/5834/0774/files/rulanugawuvivigedidimov.pdf
    • https://cdn.shopify.com/s/files/1/0431/3242/0262/files/goxefizegowilitikezilom.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zadolodiwifunum.pdf
    • https://cdn.shopify.com/s/files/1/0433/6569/5638/files/30009224234.pdf
    • https://cdn.shopify.com/s/files/1/0434/8110/4541/files/91516183026.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vuketunaxu.pdf
    • https://cdn.shopify.com/s/files/1/0427/7927/9527/files/43754673400.pdf
    • https://cdn.shopify.com/s/files/1/0435/5109/6984/files/56825618124.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_off00007fa2.bin
9a32025d6364fc28f3df0086024778b3ecfb7a31b72b1789e332a4a54a95f2a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FA2 4852 bytes
font_01_sfnt_off00009024.bin
dc7607e36d12a7f229df93434482ae52b1c2d91de0f47bb9be260f2459bc01d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9024 10940 bytes

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