Malicious PDF — malware analysis report

Static analysis result for SHA-256 14bcc5a269726cb8…

MALICIOUS

PDF

67.0 KB Created: 2020-12-21 18:56:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 49ca891271885e5ffd93d1230b3e0383 SHA-1: 152f78988d0743efacc2b3915d321fa7ca4b3c2c SHA-256: 14bcc5a269726cb8145f0978cf23b302f552a8e84d908357f119187e07b58237
154 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 'https://traffmen.ru/aws?utm_term=north+america+map+pdf+free'. This indicates the document's primary purpose is to lure the user to this malicious site. The ML classifier also strongly flagged this PDF as malicious, supporting the phishing or malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://traffmen.ru/aws?utm_term=north+america+map+pdf+free In PDF document text
    • https://cdn-cms.f-static.net/uploads/4405642/normal_5fa502c9259a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412170/normal_5fb36cb1ed4fc.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/8bd4538e-11b7-4b8d-a2a1-e50a9f309bf6/57737051281.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb33029d-a810-4e98-a857-a7e8db12667b/rooting_software_pc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/237ca0e4-cb50-4b50-a552-a7a68bf956c4/38417933284.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d383fd43-1d9e-4f90-b3fb-4eaca0f49ba2/25491559009.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6873029e-e15d-468b-9146-7a4aa96f1c7b/5660076136.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65a2737b-68c5-44b2-83ee-2538b0d5c40d/89643928848.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f839c897-ecb8-4689-bf8b-c35456665bdf/10795230290.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5b109405d5340f34a7138/t/5fd696975488895576b3cd98/1607898775531/take_away_chainsmokers_lyrics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f9fa640-baa0-41b3-a3be-9868de35d732/nueva_concordancia_strong_exhaustiva_de_la_biblia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86dc45b2-24a4-45a6-9fc1-d0ec61a3486c/valejozukanu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb59f2ae-f1c4-4607-8d66-37bd1733b1b7/search_deidre_keto_bread.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_off0000cbda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBDA 5156 bytes
SHA-256: 67c3b704c04905c11b1cc4ef6fe8a52d96a7484e87bb21cceb05b459ed0e0130
font_01_sfnt_off0000dd43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD43 9960 bytes
SHA-256: 39d59ef9a4f22c362598dabcefba09b3ba309c453bcef8fa7e05191349f67dd4

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