Malicious PDF — malware analysis report

Static analysis result for SHA-256 aba7f1903717dbb1…

MALICIOUS

PDF

41.9 KB Created: 2020-10-05 04:31:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: aafdc692001c9a9a18a12806da75f26c SHA-1: 85729bc62b8b029b037c9ee4fac018c8aa86b9a3 SHA-256: aba7f1903717dbb13d3e875d87fffbe1ea086b66a5fc9f1d3b9e80b8899bc271
124 Risk Score

Malware Insights

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

The PDF contains embedded URLs that are flagged as malicious redirectors, specifically pointing to 'ttraff.club' with a lure related to criminal justice internships. The document's structure and numerous links to disposable hosting further indicate a malicious intent to redirect users to potentially harmful content. While no scripts were explicitly extracted, the PDF's nature and the heuristic firings strongly suggest it's designed to exploit users via malicious links.

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 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.club/pify?keyword=criminal+justice+internships+fall+2020 In PDF document text
    • https://site-1038808.mozfiles.com/files/1038808/5304849502.pdfIn PDF document text
    • https://site-1038890.mozfiles.com/files/1038890/vuniji.pdfIn PDF document text
    • https://site-1036711.mozfiles.com/files/1036711/15800584631.pdfIn PDF document text
    • http://zutowuw.mghbefit.com/uploads/1/3/0/7/130775050/b0b463ea78c.pdfIn PDF document text
    • http://toxel.njlimotaxicab.com/uploads/1/3/1/1/131164048/nesarozizugiluk-vamox.pdfIn PDF document text
    • http://nupopi.bridgeways2balance.com/uploads/1/3/1/3/131381521/zabopezok_nosowedotira_jowoniwoke_korewatetezofuv.pdfIn PDF document text
    • http://bakewaj.hifacestudio.com/uploads/1/3/1/4/131453133/moxupip_doxedavosu.pdfIn PDF document text
    • http://dapobun.lisagraciano.com/uploads/1/3/2/3/132302936/4826f9ed5530a45.pdfIn PDF document text
    • http://files.malaysia-places.com/uploads/1/3/2/3/132303282/biredanigegepog_ronitufusofepa_fozosuzinasa.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/83963160-76d5-4764-98ba-b824f055b207/movidisexut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b77e2bc9-85fe-447b-8736-e14c165d959c/nujivezozawo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc44764e-b06f-4ecb-b879-bc6b1ad3acc0/35771370579.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_off0000648a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x648A 5508 bytes
SHA-256: 9d02a047f7641441fe7efc287659b4c5f2a4ec7151a691ecb2af6b2012962f76
font_01_sfnt_off0000771c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x771C 10404 bytes
SHA-256: 35f8bc258c2adaad1ecbc80687d951054c1b598cabbda7855b4cbbdb903de980

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