Malicious PDF — malware analysis report

Static analysis result for SHA-256 8080085798126349…

MALICIOUS

PDF

43.4 KB Created: 2020-08-22 07:00:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: da77acde768ecf7988dd05e084262497 SHA-1: e2233d61bb1ed1df8bf77f136c8950fcf0a49267 SHA-256: 80800857981263490ffb505620baffced0421a4463fc10eae181c208b8f2d0e1
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass external link farm, with many links pointing to shopify.com domains, and a critical heuristic firing indicates a link to a known malicious redirector infrastructure at ttraff.com. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=dd+news+reporter+neelam', suggesting a lure to news-related content to disguise the malicious redirect. The ML classifier strongly supports the malicious verdict.

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=dd+news+reporter+neelam
    • http://files.salmonfallsgardencenter.net/uploads/1/3/0/7/130738596/rexodoxelilojag-zevabijeginoka.pdf
    • http://files.cloudrodeojournal.com/uploads/1/3/1/4/131437770/xidofonusevuv.pdf
    • http://files.danielmartinezjr.com/uploads/1/3/0/9/130969061/loxafik_xewememopede.pdf
    • http://mokakon.tri-waymold.com/uploads/1/3/2/6/132695569/wimewegepibitowi.pdf
    • http://files.dolenbaptist.com/uploads/1/3/0/8/130814669/1fc06c8e90.pdf
    • https://cdn.shopify.com/s/files/1/0431/7990/1085/files/baxituxuda.pdf
    • https://cdn.shopify.com/s/files/1/0428/2381/1239/files/love_scenes_whatsapp_status_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0439/6518/6206/files/cnn_rss_feed.pdf
    • https://cdn.shopify.com/s/files/1/0437/2522/6133/files/35065567303.pdf
    • https://cdn.shopify.com/s/files/1/0431/9582/6336/files/autonomous_annalee_newitz.pdf
    • https://cdn.shopify.com/s/files/1/0429/7093/9541/files/76677680698.pdf
    • https://cdn.shopify.com/s/files/1/0434/4414/2245/files/xomubusijasivijibidaf.pdf
    • https://cdn.shopify.com/s/files/1/0429/6730/2295/files/47043234501.pdf
    • https://cdn.shopify.com/s/files/1/0440/3871/7605/files/zuketiwo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wugituvunajobi.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000603d.bin
029629e05d866c62382758eeca21611b0fd1e08eb13bd318d2461a16aceedeec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x603D 5196 bytes
font_01_sfnt_off000071da.bin
7420db9ec41012b263dff8e0d039d2a895961a6b4c1647eabbcd20f441fad98a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71DA 1936 bytes
font_02_sfnt_off00007b21.bin
018f990c28b94c0b9270f45f175921566ffc83f3882578e954d6737524e79f54		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B21 10932 bytes

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