Malicious PDF — malware analysis report

Static analysis result for SHA-256 dda5e0dfc118c258…

MALICIOUS

PDF

435.2 KB Created: 2020-11-11 01:16:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c8ddab279e70b5a6fe394e6f165cd2e0 SHA-1: d91e22d8aa80da3bd33278b0f27e27af6a9e5871 SHA-256: dda5e0dfc118c258130a685abcac8cbf0f1e9857a927782c94bfd6b1fa307aa7
198 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. This is further supported by heuristics indicating urgency lures, fake invoice lures, and a visual download button, all common tactics in phishing and malware distribution. The ML classifier also flagged the PDF as malicious with a high score. Although no scripts were extracted, the presence of a malicious URL and the nature of the lures strongly suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8691

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ggtraff.ru/aws?keyword=broward+county+tax+appraiser+website In PDF document text
    • https://cdn-cms.f-static.net/uploads/4451208/normal_5fa0cb77088fe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/e2219ea8-cb5b-4394-8d8b-83d340aee9b0/fifty_shades_of_grey_3_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/navy_eval_input_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e25ff005-3375-4bf3-8de7-f84543686518/ffxiv_red_mage_leveling_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fec62e67-2ab2-4112-aa23-16fbaa93114f/sony_mex-xb100bt_wiring_diagram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02841c10-c7ff-4353-8435-fe81a43ce7f5/diagnostico_microbiologico_bailey_scott.pdfIn PDF document text
    • https://s3.amazonaws.com/jirebonudur/color_by_numbers_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80fc2611-4bf1-4736-993b-2a187cae5a86/duvuza.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/rawaxosudogivok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f75a7ed8-efe3-48bd-8d33-88c5a897ed60/repegabivenel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ea2d167-d00d-4113-a527-4f4f13d179e5/estimacion_de_costos_de_un_proyecto.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

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0006735b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6735B 5368 bytes
SHA-256: a29179773106e8d6eb283c5fbc1c3b9680149fd83ee71a9343714756d81a8efa
font_01_sfnt_off000685ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x685BA 12304 bytes
SHA-256: 136878f33c24f01f1df960697778a0f06753fc895b11cf8f200e88e7f79c48a3
font_02_sfnt_off0006aeb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AEB2 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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