Malicious PDF — malware analysis report

Static analysis result for SHA-256 07fd86febd14db4a…

MALICIOUS

PDF

49.7 KB Created: 2020-08-20 06:47:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe967a95817c6c6b02c87bfd6cec6d21 SHA-1: 096518e47cf222a89e774e7ca3bd4077cec16486 SHA-256: 07fd86febd14db4ac4397bc7ae5a70427ccd40c93b6dbb8a696a254e6feeae1e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to 'ttraff.com', identified as malicious redirector infrastructure. Additionally, it hosts a large number of external PDF links, suggesting a link farm. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=fishing+guide+osrs+members' and a reference to a Shopify PDF, indicating a potential lure to malicious 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/pify?keyword=fishing+guide+osrs+members
    • http://repofefak.heremans-ceusters.be/uploads/1/3/1/4/131453858/e2b9f4f7.pdf
    • http://files.edgewaterinnandriversidegrill.com/uploads/1/3/0/8/130874369/wufodijukamaxipitiru.pdf
    • http://files.nickprocopio.com/uploads/1/3/0/7/130738806/debok-towafib.pdf
    • http://files.uplandsrecreationcentre.com/uploads/1/3/2/6/132683137/3658293.pdf
    • http://files.japan-trademark-patent.com/uploads/1/3/0/7/130775371/vegixuniwab.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/2421/9293/files/sofozikutodadaseleju.pdf
    • https://cdn.shopify.com/s/files/1/0429/7854/1727/files/healthy_smoothie_recipe_book.pdf
    • https://cdn.shopify.com/s/files/1/0437/6009/1287/files/nananidefupawov.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29426312843.pdf
    • https://cdn.shopify.com/s/files/1/0440/6358/8502/files/12107701970.pdf
    • https://cdn.shopify.com/s/files/1/0435/1908/2651/files/minecraft_banner_maker.pdf
    • https://cdn.shopify.com/s/files/1/0433/6739/9575/files/arab_money_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0440/9117/9160/files/vanudamawitarobogenafa.pdf
    • https://cdn.shopify.com/s/files/1/0434/3093/6733/files/medical_fitness_certificate_for_joining_new_job.pdf
    • https://cdn.shopify.com/s/files/1/0430/6065/8333/files/28835741089.pdf
    • https://cdn.shopify.com/s/files/1/0431/4349/5841/files/9365394718.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_off000085cb.bin
7ce609f20679322ba2b06e2896ca39e2bbe9fd149003ffa91d4fc3d7c5a5f6c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85CB 5092 bytes
font_01_sfnt_off000096e2.bin
f5b12a4e59deba09037c80c8e4ea9f1da8a9362237744366a0d2ddd8bb7f1815		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96E2 10208 bytes

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