Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af045c7fbe6115f…

MALICIOUS

PDF

79.2 KB Created: 2020-12-08 03:55:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 7e8524fd45edc61a4f80fba60b1ff2c0 SHA-1: 981a8a550d5a7a2da969849d681162abd028073f SHA-256: 4af045c7fbe6115fa87b69656081f542f3ed56040adfd03638de5d96e058e4e7
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffmen.ru/123?utm_term=wondershare+player+2.2+1+apk In PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/roruj-fegedevovelere-zexomojikazi-rewubujelem.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370068/normal_5f890287aef25.pdfIn PDF document text
    • https://wujipiledulom.weebly.com/uploads/1/3/4/6/134695719/kupow_fesabejuzu_jamadevidusono.pdfIn PDF document text
    • https://duxuborokepab.weebly.com/uploads/1/3/4/4/134449965/vatitezunosok.pdfIn PDF document text
    • https://voteriboxovoviv.weebly.com/uploads/1/3/4/3/134352377/906907cebbf.pdfIn PDF document text
    • https://momaramurelu.weebly.com/uploads/1/3/4/3/134309976/743f8c2d6c995.pdfIn PDF document text
    • https://nolemidu.weebly.com/uploads/1/3/4/5/134584078/kizixonogugoneje.pdfIn PDF document text
    • https://zabapekiji.weebly.com/uploads/1/3/4/4/134470890/kosufofuwojisovi.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/fcc1b0ec-8f93-4723-ad37-98492e51878e/satipifikiluzima.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd027029c5e266902693c1/1606222449468/opi_lincoln_park_after_dark_nail_polish.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d650403f5353fd956949/t/5fc6b80048d5672cfb25ffde/1606858753349/silly_sausage_doggy_dessert_apk.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5597d40f1034a5cc674bd/t/5fcea93bb49024127348719c/1607379259998/hitman_ps4_game_of_the_year_edition_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e98f330-084e-4cc2-9853-ed2fde45c77d/how_to_make_flint_and_steel_in_minecraft_xbox_one.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5859fa04221c711776f8/1606375514315/cindy_morgan_caddyshack_gif.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7b138cb936d6a06ab0ce6/t/5fccf90ff94b6402b21c4e23/1607268624333/7894287039.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5523bd26ff1194f913b76/t/5fc74de60623334b0c5df10e/1606897127045/68404791263.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_off0000f89a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF89A 5444 bytes
SHA-256: 81f082244f567880ca764c6b4771676cdcec199ba325e0c3f3f95690cd678985
font_01_sfnt_off00010b39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B39 10784 bytes
SHA-256: 0208e339aa863e7c2248499278685d53b9b6750525db714c2013873274f21315

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