Malicious PDF — malware analysis report

Static analysis result for SHA-256 c132392dbb4e33b6…

MALICIOUS

PDF

75.9 KB Created: 2021-01-04 09:40:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 2d8275192255bf9f76e275b8f6dbf212 SHA-1: 980420ca7128e6be77f6946b60075539171b45f3 SHA-256: c132392dbb4e33b6f524190ba6b18ef5650c7949f987efd2dc53327d5be876d2
242 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics and an ML classifier, indicating it is likely a phishing or malware distribution lure. The presence of numerous external links, including one pointing to a known malicious redirector, suggests an attempt to direct users to harmful websites. The 'SE_INVOICE_LURE' heuristic further supports the idea that the document is designed to trick users into taking an action, such as clicking a link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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
  • 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/aws?utm_term=guideposts+trust+warwickshire In PDF document text
    • https://cdn.sqhk.co/filomada/vjgjeif/koxifejomud.pdfIn PDF document text
    • https://cdn.sqhk.co/jafetegupam/iaIkidf/sputnik_1957_kragujevac.pdfIn PDF document text
    • https://cdn.sqhk.co/bedogipaxog/ZWqEffY/nick_cannon_net_worth_2020_forbes.pdfIn PDF document text
    • https://xikubafol.weebly.com/uploads/1/3/4/6/134607040/subez.pdfIn PDF document text
    • https://xisuviwilizej.weebly.com/uploads/1/3/4/3/134320176/e14d58f18e6.pdfIn PDF document text
    • https://cdn.sqhk.co/zuxafopagad/UcjdxtX/febarex.pdfIn PDF document text
    • https://sakafafemowuva.weebly.com/uploads/1/3/4/6/134694971/mafipaxefikowojaleb.pdfIn PDF document text
    • https://mefinijusigoti.weebly.com/uploads/1/3/4/4/134499215/gavodok-terutisesikex-fenan.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/326eed97-a0fb-4fac-ae36-8b2156537dab/adt-1_attachments_format.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d79ee3c-b38e-48c6-9837-a759674659c8/billie_eilish_merch_beanie_australia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd665003-1ffd-4e68-8ec2-308040513b3e/90417707119.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5151e6a8-7250-49fe-a2bd-17eeae7f368c/la_liste_noire_saison_5_tva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d3dbc5f-8d85-48d4-8ecf-97911e9296c4/39661912455.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/670f3944-14d1-41a2-ab3d-984e2eeaedcd/formula_2020_results.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b119534b-1090-4304-85c8-ee3bae634cf9/98754667779.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_off0000eb28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB28 5316 bytes
SHA-256: 3e35af8fae54493bcae273c68e2a2947e4e11744b9e8281dc80056c006eaa0d4
font_01_sfnt_off0000fd4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD4D 10992 bytes
SHA-256: 08bfcb480a9b074c649985e5f051bab23c58b0703f2a3ff9a0910ee6b65c098c

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