Malicious PDF — malware analysis report

Static analysis result for SHA-256 69485d4b428354ec…

MALICIOUS

PDF

48.4 KB Created: 2020-08-07 16:05:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83c45f3298e502f15c34407cdecf3d08 SHA-1: 50935ebc87a8e093f898de7dc2d8036e2ceb098e SHA-256: 69485d4b428354ece20ab6d936c15825e808ed39e1a7cefeff453381cb7de67d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to suspicious or unknown domains, suggesting a link farm or redirector strategy. The primary malicious link identified is 'https://ttraff.cc/pify?keyword=causes+of+bantu+migration+from+luba+lunda+kingdom+pdf', which is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and other Shopify links, indicating an attempt to disguise malicious activity as legitimate 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=causes+of+bantu+migration+from+luba+lunda+kingdom+pdf
    • http://files.azzaziel.net/uploads/1/3/0/7/130776826/jasogom.pdf
    • http://files.liv4ever.com/uploads/1/3/1/4/131437775/8c6e3.pdf
    • http://files.tbamfordguitartutor.com/uploads/1/3/0/7/130776168/wigukawafisinubaxo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/2738/1920/files/sepevujo.pdf
    • https://cdn.shopify.com/s/files/1/0428/2250/0518/files/93202259791.pdf
    • https://cdn.shopify.com/s/files/1/0431/8212/9320/files/double_arrow_keyboard.pdf
    • https://cdn.shopify.com/s/files/1/0434/7723/7917/files/96811715483.pdf
    • https://cdn.shopify.com/s/files/1/0431/8052/3678/files/72468805549.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/fekuxomuvatiremowir.pdf
    • https://cdn.shopify.com/s/files/1/0429/7375/7603/files/retuxamuve.pdf
    • https://cdn.shopify.com/s/files/1/0431/1564/3031/files/wokigaxereporab.pdf
    • https://cdn.shopify.com/s/files/1/0432/0971/9965/files/jutunabom.pdf
    • https://cdn.shopify.com/s/files/1/0433/2843/8440/files/dusikokijemugevo.pdf
    • https://cdn.shopify.com/s/files/1/0436/4104/5145/files/blender_animation_tutorial_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/4027/6642/files/durumokalalamimebidod.pdf
    • https://cdn.shopify.com/s/files/1/0432/9521/1680/files/lipologeripokujipejuruje.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a3f.bin
cb13620c15ec09ee6e793733e2f83696e7d3fe12816c8354659a5b74d27d1868		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A3F 5472 bytes
font_01_sfnt_off00007cbb.bin
9223be3611e9b868564b51c187078b779907e93ea791120d028e493c53d4b6ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CBB 10016 bytes
font_02_sfnt_off00009f03.bin
55ee31f2b9c575572aca401957c5cf2f3b57b55b1dd57d1bb6d1e144d3512b41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F03 16088 bytes

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