Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e57aa053c0ed004…

MALICIOUS

PDF

68.8 KB Created: 2020-12-18 20:50:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 515713a6df4c62e0e69a786fc7c761db SHA-1: e1998487fefd01a9bfb7dd6b7f0553fb0b7fa5d3 SHA-256: 0e57aa053c0ed0041226fb53dbe068bead88a7f262936d6e3eb584528c9f7efb
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a high-severity heuristic indicating it is a redirector link for phishing, pointing to the URL https://trafftec.ru/strik?utm_term=8-14.5+tires+walmart. This URL is likely used to lure victims into clicking, potentially leading to credential theft or further malware infection. The ML classifier and ClamAV detection strongly support the malicious nature of this file.

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
  • 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://trafftec.ru/strik?utm_term=8-14.5+tires+walmart PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4376357/normal_5fb278875e1f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406208/normal_5fb9b43785cc0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393908/normal_5fcb99df39806.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376875/normal_5f9c3a33140b9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408995/normal_5fcd5f3c858ca.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/d762dec1-85b8-4403-bbb0-5b90e8ebfcae/milaxuzotatemefix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb41ac1b-d450-4a3d-b2be-fed9af66f33e/words_that_begin_with_sal.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5932f0b6b03258f55155a/t/5fd187a5eeaf2774ac85aca8/1607567269654/robot_avengers_mod_apk.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc55e3d239b0722914f125b/t/5fc92597c294002d2bf9e785/1607017882136/93311158977.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc169478139af037648d9ed/t/5fc4c58b3c6ccf69f3f53645/1606731147883/holliston_police_department_fax_number.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc283fb2bbd74065810d034/t/5fc884fc26a3037b433e4145/1606976765410/social_media_marketing_agency_nyc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b6f8ba0-2ce5-464f-8a5e-f36a8376b71f/jodusililigawelanesu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d2f2d26ff1194f734ddd/t/5fc259fe145a8629dcfce1f4/1606572542354/haunted_house_waiver_netflix.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf65cbbc819f1cf4d0a0ab/1606378955892/lerapofejifilameba.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2c1e18ef7301f8b1ccf77/t/5fc954b6b862b1642ea7ea54/1607029942558/45912964029.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27f51ce9-e25c-4d8b-a144-28641eda9e40/fudemiwesu.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_off0000d006.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD006 5348 bytes
SHA-256: fd3327d6bb90d1fc976b8d6075645af96a5c892199fd0284000b6513be37b2ff
font_01_sfnt_off0000e24b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE24B 10692 bytes
SHA-256: 9d34d78e04ad0224397115b010d6343a6c3ba7f66a4ca8cf09450ccafeb72e7d

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