Malicious PDF — malware analysis report

Static analysis result for SHA-256 abb3f47e26f46f9c…

MALICIOUS

PDF

46.7 KB Created: 2020-11-04 05:33:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 1731434e1c04274faf90ebc8b70539e5 SHA-1: da495deb9de12b30640d17a9a202925addc96e40 SHA-256: abb3f47e26f46f9ca7c1167dbb0f00894dba17665f5cadf2380aea99a77165dd
114 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/strik?keyword=redlands+teacher+association'. Additionally, a callback lure heuristic suggests the document is designed to trick users into calling a number, likely in a scam context. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of a malicious URL and the callback lure indicate a phishing or scam attempt, potentially leading to further malicious activity.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://gettraff.ru/strik?keyword=redlands+teacher+association In PDF document text
    • https://lorujuxivole.weebly.com/uploads/1/3/4/5/134595667/guruw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413845/normal_5fa2172d926b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366317/normal_5f875dc78eb8e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368750/normal_5f8d43e15233e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371244/normal_5f88d58cd4483.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409997/normal_5f969f3713779.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379601/normal_5f8b9e96dd52d.pdfIn PDF document text
    • https://xivenisulebitok.weebly.com/uploads/1/3/1/3/131378814/manaxuvujir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370317/normal_5f894cd866b29.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/askep_bronkopneumonia_pada_anak_nanda_nic_noc.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/51341232895.pdfIn PDF document text
    • https://s3.amazonaws.com/xamapebonijos/62318967149.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c1e158d-3c65-408d-8372-1b7b7096d0c4/10831527044.pdfIn PDF document text
    • https://s3.amazonaws.com/tipikaxe/31801215847.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/vototebo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cbdbb803-d107-4a02-a107-61841387e3ff/nobokaxofivinaper.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_off00007691.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7691 5032 bytes
SHA-256: 1f2786383010258cc6532e8256c912f91fc5997226dd5c0fbc3ce78b4e61577c
font_01_sfnt_off000087a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87A8 11020 bytes
SHA-256: e198f15e9421abe1a1c3a7ae1ee61bdbd527022326b419770e548a4312468842

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