Malicious PDF — malware analysis report

Static analysis result for SHA-256 00554be3080e51ac…

MALICIOUS

PDF

38.2 KB Created: 2020-08-04 21:31:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d5cdafb4824eaf28280874ecd768d138 SHA-1: 8dcd7da07dca14c0005356b97070884c7a7f3743 SHA-256: 00554be3080e51ac47e3b39443f97173bfed94ab2782b309a60d9a7d8198848f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm or SEO poisoning tactic. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=the+arbitration+act+1996+a+commentary+pdf'. The document body itself contains obfuscated text and the malicious URL, further indicating a malicious intent 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/pify?keyword=the+arbitration+act+1996+a+commentary+pdf
    • http://files.stjuliansgranada.com/uploads/1/3/1/6/131606454/xumusojobijax-nemokesubikaz-nuborib-sajuberopiku.pdf
    • http://zufeburuv.newzealandreds.com/uploads/1/3/2/6/132681670/51be15436fb.pdf
    • http://files.paulandtashamassage.com/uploads/1/3/0/8/130873718/4285627.pdf
    • http://files.keithlienert.com/uploads/1/3/1/4/131484029/rivipofisuf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/3448/3616/files/lesatilaniwupulanuxebe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/5561128363.pdf
    • https://cdn.shopify.com/s/files/1/0430/5613/6341/files/50409513474.pdf
    • https://cdn.shopify.com/s/files/1/0437/1903/2987/files/73553151808.pdf
    • https://cdn.shopify.com/s/files/1/0438/4158/5314/files/simmons_crib_parts.pdf
    • https://cdn.shopify.com/s/files/1/0430/4093/1991/files/patoburemisuviwabozo.pdf
    • https://cdn.shopify.com/s/files/1/0428/8951/1071/files/kolesonevaxulupatomoxe.pdf
    • https://cdn.shopify.com/s/files/1/0438/7084/7131/files/zalimexinilini.pdf
    • https://cdn.shopify.com/s/files/1/0434/8205/4813/files/fadujubipopekexipifuz.pdf
    • https://cdn.shopify.com/s/files/1/0434/7409/2196/files/37157307452.pdf
    • https://cdn.shopify.com/s/files/1/0428/7958/2374/files/802987776.pdf
    • https://cdn.shopify.com/s/files/1/0440/8305/2696/files/tixemanabare.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_off00005644.bin
401fb11ccdbb7ffb543f190df6f7b68890e3f4f8a4b9d02d0e88e855a4841856		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5644 5736 bytes
font_01_sfnt_off000069a6.bin
7a2b802956c10b68fccaedcf6480fba46846d203115df876d96641bd814226c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69A6 10024 bytes

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