Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a2f54ffb96e1966…

MALICIOUS

PDF

70.3 KB Created: 2021-01-09 18:05:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: f013c919214979cc1ab6d7e2a75fd2d0 SHA-1: b8366ef46b917c7a2123bb052f00765a16e23fa3 SHA-256: 9a2f54ffb96e196631c4920cd528dfa8661ae7b32279fd3f5636e220d0f85c1e
222 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains multiple heuristics indicating malicious intent, including links to known malicious redirectors and a large number of embedded links to external PDFs, suggesting a link farm for SEO manipulation or phishing. The presence of a 'download button' lure further supports a deceptive workflow. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest it's designed to redirect users to malicious sites, potentially for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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://cctraff.ru/aws?utm_term=happn+local+dating+app+apkpure In PDF document text
    • https://rusokupos.weebly.com/uploads/1/3/4/4/134468665/lijumogifazev-muvoro-pemuw.pdfIn PDF document text
    • https://pefojefevofat.weebly.com/uploads/1/3/4/6/134659321/8957893.pdfIn PDF document text
    • https://lososegumupabi.weebly.com/uploads/1/3/1/4/131407698/momikavosoxazon-malor-rananagiv.pdfIn PDF document text
    • https://betofatosipetu.weebly.com/uploads/1/3/4/7/134771425/kumunaranewena.pdfIn PDF document text
    • https://seririgikum.weebly.com/uploads/1/3/0/7/130739922/2853653.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/pugomonapoxuxe/60_second_santa_run_walkthrough.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b12eec98-d01b-48d7-a480-ad3ef0e4cc67/64316397774.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/black_rivet_purses_only.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1088790f-1543-4c5a-a75f-cb7f9f4d504c/tomujofuno.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/automation_studio_6._0_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/pulujolatepuv/sezemibadinobozi.pdfIn PDF document text
    • https://s3.amazonaws.com/jupevuxirapi/bosaneg.pdfIn PDF document text
    • https://s3.amazonaws.com/mokixetat/58671194710.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_off0000d662.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD662 5088 bytes
SHA-256: 16fcb4371d359e8d521c5124a235e972161fbb326cca4a267a2585679865183a
font_01_sfnt_off0000e7c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7C0 10752 bytes
SHA-256: a3e58fc5aa7342b1b2f774c2175419902072155a7f2acea7de2150f45a1e77f8

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