Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a6f9046b024168e…

MALICIOUS

PDF

71.7 KB Created: 2021-01-11 08:06:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: d7d31f6993040f03422c099fd855a76f SHA-1: b63a609db8416e673275825ce638493dd4203112 SHA-256: 5a6f9046b024168e126833ce0a64cb71617488741e0b9c6d603c49a736a62c89
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, many of which are part of an SEO link farm, suggesting a phishing or scam attempt. The primary redirector URL, 'https://trafficel.ru/aws?utm_term=sujet+brevet+blanc+2019+pdf', is identified as a lure for free downloads. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate malicious intent, likely to redirect users to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafficel.ru/aws?utm_term=sujet+brevet+blanc+2019+pdf PDF link annotation
    • https://ligexuvuzi.weebly.com/uploads/1/3/0/8/130814340/jufoxagefig-wodaxozape-voxadevegi.pdfIn PDF document text
    • https://ritipovilij.weebly.com/uploads/1/3/4/6/134650849/a1aad9c81.pdfIn PDF document text
    • https://cdn.sqhk.co/pigalixow/ejdhagi/wubexatitufudogutewebu.pdfIn PDF document text
    • https://jivarogogujuno.weebly.com/uploads/1/3/4/5/134513891/rotuv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461763/normal_5feb5f342aef6.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/rufonali/wiggins_and_mctighe_backward_design_template.pdfIn PDF document text
    • https://s3.amazonaws.com/jujojomojemiz/animal_deformities_due_to_pollution.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/type_space_maintainer.pdfIn PDF document text
    • https://s3.amazonaws.com/zatazewoz/night_bike_ride_whatsapp_status_video.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/meiosis_worksheet_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/staff_nurse_uniform_nhs.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaporam/printable_calendar_templates_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/potamotaz/lepurit.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 8

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_off0000cc3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC3D 5832 bytes
SHA-256: 2a17ec3e424398d511dd3daa0d2dd915b12b6d02b2424e5aa380711e72d2255d
font_01_sfnt_off0000e02b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE02B 1956 bytes
SHA-256: 87f4dc9fc1dc24012f317389c1eb0370a9430534078bbe5b7f9ba8065666d42c
font_02_sfnt_off0000e94c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE94C 12108 bytes
SHA-256: e27ac8948edea33fcdbbf3dbcc9fc9e7a6a9d1eba57befa387a302d5caf5b10c

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