Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f00226fcb0bfb6c…

MALICIOUS

PDF

47.1 KB Created: 2020-07-08 11:21:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 7841d882fed6d33263da20aa62b8feeb SHA-1: d0c0000f8b29adf21450566b61455cecfd9d3633 SHA-256: 5f00226fcb0bfb6c40ddf6d7e04f60de3b327e8df82a599e26ed2683c5a06775
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document functions as a link farm, presenting itself as a download for 'strategic management books pdf'. It contains numerous links, with the primary one redirecting to malicious infrastructure at 'ttraff.ru'. The document's structure and embedded links strongly suggest a phishing or malicious redirection attempt, likely to distribute further malware or lead users to scam pages.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.ru/wb?keyword=strategic%20management%20books%20pdf%20download In PDF document text
    • http://files.trueembodiment.com/uploads/1/3/0/7/130740232/cd4a44fc20c3a4.pdfIn PDF document text
    • http://files.lucianamagdalena.com/uploads/1/3/1/6/131606550/75f47b5d288d6.pdfIn PDF document text
    • http://files.batonrougedumpsterrentalpros.com/uploads/1/3/1/8/131857818/gipewadadukozaj.pdfIn PDF document text
    • http://files.harmonizeyourspace.com/uploads/1/3/2/3/132302913/6922088.pdfIn PDF document text
    • http://files.joecoxwell.com/uploads/1/3/2/7/132710782/gobisopaj-selilizoj-tuvipasiwafi.pdfIn PDF document text
    • http://files.writings.emanatepresence.com/uploads/1/3/1/3/131384573/72da883.pdfIn PDF document text
    • http://files.rustyscupper.net/uploads/1/3/1/4/131437753/c859f35b22df88.pdfIn PDF document text
    • http://files.edenrayna.com/uploads/1/3/1/6/131606550/fatajumazejato-pevopowij-tasukezupek-janebitufa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ginovak.files.wordpress.com/2020/07/83825333480.pdfIn PDF document text
    • https://tesavip.files.wordpress.com/2020/07/redabefabutu.pdfIn PDF document text
    • https://sewekomebugi.files.wordpress.com/2020/06/50323099743.pdfIn PDF document text
    • https://zetirufim.files.wordpress.com/2020/07/70526661451.pdfIn PDF document text
    • https://tusolesi.files.wordpress.com/2020/07/wawolupos.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000079ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79FF 5660 bytes
SHA-256: b4ee7a3da6c3eace12bae5f9046311f4bb2fb90339d6e4fb12154d54874b43c5
font_01_sfnt_off00008d31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D31 10140 bytes
SHA-256: ab77bfc47a4894b71151e7e38c58dd4407436d793bec7128bbcf2172a9f79d54