Malicious PDF — malware analysis report

Static analysis result for SHA-256 abd863e648970d70…

MALICIOUS

PDF

119.3 KB Created: 2021-05-26 17:35:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: a2f3890ee9300f6dc51f7b5b67421a34 SHA-1: 3303d940e6193a731d1e534298cd6bc1821285dc SHA-256: abd863e648970d70fdb4da203ea01af575147dd28d55c5ddde095ed48ff24a28
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains a large number of external links, many of which point to potentially malicious domains, suggesting a link farm or phishing attempt. The embedded URLs and the PDF structure indicate an attempt to redirect users to external sites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • 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.
  • 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://soxebez.ru/strik?utm_term=stress+management+and+prevention+applications+to+daily+life+3rd+edition+pdf PDF link annotation
    • https://fupopafesuz.weebly.com/uploads/1/3/4/4/134443157/tenivatonisi.pdfIn PDF document text
    • https://guvoladedesu.weebly.com/uploads/1/3/1/4/131453897/5788602.pdfIn PDF document text
    • https://dowamodugepaxa.weebly.com/uploads/1/3/0/7/130739159/nirozubifalo.pdfIn PDF document text
    • https://vatopefo.weebly.com/uploads/1/3/1/3/131398509/51e57b307.pdfIn PDF document text
    • https://denagivar.weebly.com/uploads/1/3/1/3/131383646/nopuwavejetapunad.pdfIn PDF document text
    • https://xugoxuxilolikat.weebly.com/uploads/1/3/4/8/134860817/6976767.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/34b6b3e0-aa11-46fc-9e64-2d7c1f560ed5/control_systems_engineering_courses.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/485a975e-a7b1-41bc-9359-fb34d3d16e94/how_to_clean_toilet_with_pine_sol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2408f41a-31bb-4932-8fe9-b5c4e16b16d1/vinavemokitonekum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36bb8453-d24f-4845-ad52-2cf7e4d94d0a/agile_software_development_advantages_and_disadvantages.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bd28db2-a980-4f7d-8be3-4d0a94711f93/what_is_the_potential_difference_across_the_capacitor_if_the_spacing_between_the_plates_is_1.20_mm.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8169cb02-a9e5-4a0a-bf7f-9e9e79260120/interior_angle_of_regular_polygon_having_n_sides.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b274b7bb-e311-4787-91a7-8d48ddc35944/zulodedanixo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/873e12a8-b781-488b-9e6f-a6e96f1d4adb/95937240919.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c2f0699-7b21-40f5-b99b-c3af2b544c41/11562020538.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2614a99-953e-4605-b7e9-414ef8a661d6/ligirepapigojofisesake.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70295a38-0803-417d-95bb-fd33ac75f888/61916399481.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_off00018dad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18DAD 5904 bytes
SHA-256: 31ea7dbd8290550ba4afab355011b101a16a28432054864faf1effc75192c20a
font_01_sfnt_off0001a1c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A1C2 13228 bytes
SHA-256: 9d7186fd782183de207ea9d99ae62950379c6ab909f0f693b1f20cb91e3d9f47

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