Malicious PDF — malware analysis report

Static analysis result for SHA-256 73ecfaabb2c72f0a…

MALICIOUS

PDF

42.7 KB Created: 2020-08-01 11:45:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85a1751ceb767ec331e14a0ce930e429 SHA-1: 4736f0271b1bd67df5397340ebf180505e0f8ee6 SHA-256: 73ecfaabb2c72f0abb1ae01e9362fa71739bcf8982b60b021b3882daae411f74
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including one pointing to a known malicious redirector (ttraff.com). The heuristic firings indicate this PDF is designed as a link farm, likely to distribute further malicious content or phish users. The ML classifier strongly supports the malicious nature of this document.

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=apollo+100+joy
    • http://files.yonemoto.com/uploads/1/3/1/4/131453897/545605.pdf
    • http://files.artreasuresforever.com/uploads/1/3/0/9/130969656/gixuvotego-jidonujeb-jajubowirov-livuwonib.pdf
    • http://files.streetambitionunited.com/uploads/1/3/1/8/131856212/zimazutav.pdf
    • http://files.plazaproduce.com/uploads/1/3/1/3/131383426/vizafazemudojopa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/1898/5377/files/mtg_arena_update.pdf
    • https://cdn.shopify.com/s/files/1/0431/6128/8868/files/zikizulapejadolabog.pdf
    • https://cdn.shopify.com/s/files/1/0428/2266/4348/files/jogatubaladedubanemip.pdf
    • https://cdn.shopify.com/s/files/1/0429/3486/1987/files/xorevex.pdf
    • https://cdn.shopify.com/s/files/1/0427/4490/5884/files/guvogajemap.pdf
    • https://cdn.shopify.com/s/files/1/0440/8688/6552/files/lepokilogako.pdf
    • https://cdn.shopify.com/s/files/1/0431/1924/7514/files/84411300648.pdf
    • https://cdn.shopify.com/s/files/1/0429/5193/4108/files/15334059238.pdf
    • https://cdn.shopify.com/s/files/1/0427/5381/8790/files/kerisew.pdf
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/nizizudenupanefevizo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37872338034.pdf
    • https://cdn.shopify.com/s/files/1/0432/7338/8190/files/2885814426.pdf
    • https://cdn.shopify.com/s/files/1/0427/7246/3772/files/rolonigagafevatagim.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_off00005f57.bin
ad24c9da73acdbd07efc79c441b691c78558c1ae7bdbcac7c95e42f2d3524dc6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F57 4128 bytes
font_01_sfnt_off00006d61.bin
53696079811393e971f2dba85431a0efb2320ca1ed0f25c2ebe09dec5f8b6f4b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D61 9980 bytes
font_02_sfnt_off00008f9d.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F9D 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.