Malicious PDF — malware analysis report

Static analysis result for SHA-256 34f54e54f1433f25…

MALICIOUS

PDF

88.3 KB Created: 2020-12-17 02:14:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 62e0f08a032a41255e09daa72a34e2c2 SHA-1: b6ad9100a6663c814bf894ba89842f923ac54663 SHA-256: 34f54e54f1433f2569f882d03beb57eedef574fd272f8fecc769250ddfab63f2
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous links to external resources, with one identified as a known malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to 'Dapt post cabg guidelines', suggesting a targeted phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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=dapt+post+cabg+guidelines In PDF document text
    • https://static.s123-cdn-static.com/uploads/4382621/normal_5fcb35b199568.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459170/normal_5fa2085613f34.pdfIn PDF document text
    • https://pixamowogiru.weebly.com/uploads/1/3/4/5/134590731/0bcee130bd44.pdfIn PDF document text
    • https://digafixi.weebly.com/uploads/1/3/0/7/130776371/rofimigaso-gegugiranijemo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382613/normal_5f8ef50ca208f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451205/normal_5fb9555f5de9a.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/wilugugo/22702686539.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4000261-83ec-46f6-a7c8-533c2e2fe989/pakazo.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/candy_candy_final_story_volume_2.pdfIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/tribe_presets_free.pdfIn PDF document text
    • https://s3.amazonaws.com/nuruvapozixix/90484574159.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85597c0f-081b-4f52-a537-9b297887a881/imagenes_de_antropologia_filosofica.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/how_to_make_the_color_gold_with_food_coloring.pdfIn PDF document text
    • https://s3.amazonaws.com/gozifep/mapa_blood_strike_cs_1._6.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011143.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11143 2960 bytes
SHA-256: 4253ce374f546ed82c0b962bfad5e193173c5af7311640f7068ccdda2cb38311
font_01_sfnt_off00011bc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BC4 5284 bytes
SHA-256: d8e7059bc0634d7b1da5b34648270d40138b8a5bd1098fb17a3b43195122579a
font_02_sfnt_off00012dcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DCD 11244 bytes
SHA-256: 37ff96ecb8c292d2a399dad4f316a6fd75053d79f84ab145fba55a294919de94

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