Malicious PDF — malware analysis report

Static analysis result for SHA-256 94c28ae6c565ec41…

MALICIOUS

PDF

77.4 KB Created: 2021-04-01 03:47:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f5f30cf2f373da0253460853a972e4fa SHA-1: 7d5f32a73f547aa5c1e41a90ea5d4587b732dbd5 SHA-256: 94c28ae6c565ec41b27b2156293ec3d33fe42a9cf92e900c75d6ce89babaa5a2
156 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that appears to be part of a link farm, likely intended to drive traffic or host malicious content. ClamAV detection and ML classification strongly indicate malicious intent, specifically phishing. The presence of an external URI and the nature of the heuristic firings suggest this PDF is designed to trick users into visiting a malicious website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lozipotod.ru/wix?keyword=night+vision+spy+camera+apk
    • https://cdn-cms.f-static.net/uploads/4384045/normal_6041818dcae6a.pdf
    • https://cdn.sqhk.co/dasadogiso/KeVjdOX/89166604537.pdf
    • https://cdn.sqhk.co/taduzotul/bggnjhU/greenroad_driver_safety.pdf
    • https://xarisoxetawekox.weebly.com/uploads/1/3/4/3/134399368/5489823.pdf
    • https://cdn-cms.f-static.net/uploads/4370280/normal_600a24103b9e9.pdf
    • https://gixujadimi.weebly.com/uploads/1/3/4/7/134708567/bowoke.pdf
    • https://kiriwalukejogof.weebly.com/uploads/1/3/4/3/134310578/jezonufezes.pdf
    • https://cdn.sqhk.co/lomekojop/ifGgcjf/kofonipuxalapixij.pdf
    • https://xoramudoxuxuxo.weebly.com/uploads/1/3/4/4/134471846/jolebiju.pdf
    • https://static.s123-cdn-static.com/uploads/4455907/normal_6004cb852ea4b.pdf
    • https://melegejisud.weebly.com/uploads/1/3/1/3/131379421/nabowetatele.pdf
    • https://memibiwogiluged.weebly.com/uploads/1/3/4/1/134131866/bafawevati_kodezefim.pdf
    • https://cdn.sqhk.co/rodofusavivi/gcDjcgh/16112864375.pdf
    • https://static.s123-cdn-static.com/uploads/4530937/normal_5fcd8f6bd21e0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/76e0bbf9-66cd-4163-9383-ccec8d01d8eb/19159506057.pdf
    • https://uploads.strikinglycdn.com/files/01a79480-f1ab-40f6-b829-86255a632fc9/what_are_examples_of_text_structures.pdf
    • http://bipulusesag.epizy.com/chicken_soup_for_the_soul_dog_food_ingredients.pdf
    • https://uploads.strikinglycdn.com/files/e4617d32-1736-4bd9-9d0f-18c14891fd46/central_route_to_persuasion_ads_examples.pdf
    • https://uploads.strikinglycdn.com/files/f5fd51ea-e3c3-408e-8d84-177b74027df3/wutufuban.pdf
    • http://toguzojokes.epizy.com/zenixibisazo.pdf
    • http://rokimaligevijep.rf.gd/55186063919.pdf
    • https://uploads.strikinglycdn.com/files/1f2fcaa7-519f-4a65-aeb1-874ad7451a16/schwinn_230_recumbent_bike_assembly.pdf
    • http://rukojipunuwupur.epizy.com/vobogugoz.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f07f.bin
488c26e745868745ab10ffaa66dedfda4677892b576f5617b1d423b2392c72b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF07F 5508 bytes
font_01_sfnt_off00010330.bin
be0ac7c34f9aa52579675a2636b5f6d2b866192f13beba97de21fbe1acf620fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10330 10684 bytes

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