Malicious PDF — malware analysis report

Static analysis result for SHA-256 022bde2002556632…

MALICIOUS

PDF

42.6 KB Created: 2020-09-16 17:57:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03db9dd21f5b3472e7a25de861c7e249 SHA-1: 31621d48a06a34a44fc79549c9a733df9e7196d9 SHA-256: 022bde2002556632b69dc4564c804e1d79a0f7286fcb9ab45e4ecd66a18ed61f
154 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a redirector to `https://ttraff.com/wix?keyword=pokemon+x+strategy+guide`, indicating a likely phishing or malware distribution attempt. The document body, though heavily obfuscated, contains references to strategy guides and URLs, reinforcing the lure. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful 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.com/wix?keyword=pokemon+x+strategy+guide
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/5324/3816/files/xefik.pdf
    • https://cdn.shopify.com/s/files/1/0431/4942/6839/files/zineru.pdf
    • https://cdn.shopify.com/s/files/1/0460/0535/4657/files/gunawirer.pdf
    • https://709e5b45-1594-4ed3-b68b-b1886209f51d.filesusr.com/ugd/3be48b_708e058c02f54cf5922a5d1de5998ce8.pdf?index=true
    • https://3fb00cab-3103-492b-ba05-776a71ae3f94.filesusr.com/ugd/8e7730_828d6836a8db4307b94a5184ec75cf7a.pdf?index=true
    • https://31aa4a2a-46c3-4c8a-9336-0c236ae27b6e.filesusr.com/ugd/eb4c03_376a283a53ae4cdba68a831465812080.pdf?index=true
    • https://5abec3f4-f9b5-4233-8877-1576d1785665.filesusr.com/ugd/d2751c_61d32f2de2e841cca1e9a3b507e156dd.pdf?index=true
    • https://aa456f23-07cc-4b8d-9fed-132e39edce44.filesusr.com/ugd/2eedf1_7115092a21f84af280b0fd42e017a67d.pdf?index=true
    • https://ffdaf45e-0183-44ce-b4b9-b0707bb5c42f.filesusr.com/ugd/668a47_ad5059f6a5f04067988ac9bcb4e6f35a.pdf?index=true
    • https://f95b338f-55ce-4522-91f5-ce8b02dba5fe.filesusr.com/ugd/91e123_bb3639cf5b96421a945781d6de0a67c9.pdf?index=true
    • https://30ebd2f8-e7dd-45f8-add3-8fb0aee33585.filesusr.com/ugd/dcf9ad_3eec4acac1a44e3f9e76f61002d83e6e.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0432/0549/2904/files/cisco_ccna_security_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/8181/7495/files/nawabudigo.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_off00005b96.bin
d27072a9d734eee958fd22e3e03094bc38317a2c2154033cb4c5e7039bf631ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B96 3840 bytes
font_01_sfnt_off00006944.bin
a2347b529138f5c1f1c0f440c5300271fef64e1b839e6790fb2f6484585cfe53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6944 5348 bytes
font_02_sfnt_off00007b6a.bin
38d917f924856f9db3915c2fbd555e0e1c5fa4ade614984b52d19f8d1a99a944		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B6A 9936 bytes

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