Malicious PDF — malware analysis report

Static analysis result for SHA-256 929373bbf70e196a…

MALICIOUS

PDF

43.2 KB Created: 2020-10-10 17:09:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 98705c90adcdb90d9a22312b5b03e9b0 SHA-1: e21bda5a472bb7d14a29d1bd4f3afddddf5744b9 SHA-256: 929373bbf70e196a91e262cc40a21df31c868083a527b6367bc2ae9397e26a0c
184 Risk Score

Malware Insights

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

The PDF contains a prominent link that redirects to a malicious domain, disguised as a schedule. This indicates a phishing or redirection attempt. The presence of numerous other PDF links on disposable hosting further supports a link farm strategy, likely for SEO manipulation or distributing further malicious content. No scripts were extracted, but the PDF structure itself is designed to lead users to malicious URLs.

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.link/pify?keyword=licking+county+4-h+band+schedule In PDF document text
    • https://site-1036667.mozfiles.com/files/1036667/numolegaxezitobiwurife.pdfIn PDF document text
    • https://site-1043177.mozfiles.com/files/1043177/kuxurizepazerugi.pdfIn PDF document text
    • https://site-1036684.mozfiles.com/files/1036684/katadirijesivepipotul.pdfIn PDF document text
    • https://site-1036786.mozfiles.com/files/1036786/weluwotuvokoboluxom.pdfIn PDF document text
    • https://site-1037902.mozfiles.com/files/1037902/sodoro.pdfIn PDF document text
    • http://files.angellanejewelry.com/uploads/1/3/0/7/130775027/jawovemup.pdfIn PDF document text
    • http://files.firstworldnewpaltz.com/uploads/1/3/1/4/131484467/e0c3c435bae1ce.pdfIn PDF document text
    • http://wabekogib.bsmslibrary.com/uploads/1/3/1/3/131381428/kukozafo.pdfIn PDF document text
    • http://files.customironideas.com/uploads/1/3/1/3/131384227/c03b696974.pdfIn PDF document text
    • http://rovubax.saverenodumpsterdiving.com/uploads/1/3/0/8/130874429/niwozejaselole.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1db494b0-67ca-4792-8c46-397b73b2fd08/36922277941.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37381804-f095-4254-ad47-686dfd2d4060/xusukonanibe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e15964d7-9921-4e93-8f39-e50bcff01f69/33142256632.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9183bb06-b450-465c-891d-ddbd8abb6a4b/suvinonatetu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3759430-c170-4fe2-81ba-026aba1859c8/wirozevowixigezegu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f8d0600-ef88-4333-9e6f-554875127481/xukanetivarojokijibibaker.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d112a047-2cf8-4584-952b-6753be6d2350/45891980622.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6f81b2b-c270-43dd-a6fa-e782a4fae255/xusesitagawazaxumo.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_off00006a6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A6D 5472 bytes
SHA-256: 4dc89ec0abf842c576e4c15a2339a6c9a3f0c2d82a3853d07ea47696a738f0a0
font_01_sfnt_off00007d1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D1C 9992 bytes
SHA-256: 660c916f6c8311aba865c1288d9e38e980f8d0149806dce24bcf469546301e2f