Malicious PDF — malware analysis report

Static analysis result for SHA-256 42424faaef0a9492…

MALICIOUS

PDF

90.0 KB Created: 2021-04-09 04:50:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 2c2556f99c5242b1a13da7b892cc8670 SHA-1: b63f3623fc67968b9d85759d5733ecea7417b31b SHA-256: 42424faaef0a9492b841d347fa46ba085aa10a26658f0b77484f5c718ef2fe23
156 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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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://lozipotod.ru/strik?utm_term=lock+pick+practice+set PDF link annotation
    • https://falogumirej.weebly.com/uploads/1/3/4/3/134368081/6430238.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454672/normal_6004efa3a5138.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494681/normal_60338deeb8a7b.pdfIn PDF document text
    • http://bewizevamud.iblogger.org/what_causes_conflict_between_friends.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374379/normal_5fe2102960f5d.pdfIn PDF document text
    • https://pojojozujivalim.weebly.com/uploads/1/3/1/1/131164399/47006c26.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/lonif.pdfIn PDF document text
    • https://be8f41f0-9ddd-434d-ab6d-aa755a40b80d.filesusr.com/ugd/726d9c_a945e69b1dbe4000bdcefdd3ae66e1ff.pdf?index=trueIn PDF document text
    • http://wekaniloba.rf.gd/9163911412.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/34663597752.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/how_to_charge_a_bering_solar_watch.pdfIn PDF document text
    • https://31c8a3d4-0132-49f1-a04f-09c79d03e01f.filesusr.com/ugd/a4da84_fecf6b5ba70545e5a024819e7b87c8db.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sazixipame/96876212375.pdfIn PDF document text
    • http://pidukegub.epizy.com/holmes_air_filters_walmart.pdfIn PDF document text
    • https://d8acad56-eb9a-42d1-a06c-a695c5b02328.filesusr.com/ugd/0ad6c7_5f4a164ed20d480e922ba6f634a69d8f.pdf?index=trueIn PDF document text
    • http://sifebina.epizy.com/35376778056.pdfIn PDF document text
    • http://sovezogodum.rf.gd/samsung_allshare_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/lekezaru/97779771905.pdfIn PDF document text
    • https://s3.amazonaws.com/wivunonovef/8606554847.pdfIn PDF document text
    • https://9d349da1-218b-4b59-9e37-2a90cab56d40.filesusr.com/ugd/de9003_495a1027343643748e0c23dffaa632e4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/purawuma/94983770073.pdfIn PDF document text
    • https://s3.amazonaws.com/zibenoroduzuw/best_3d_model_viewer_android.pdfIn PDF document text
    • https://s3.amazonaws.com/mokixetat/kepulanuzowof.pdfIn PDF document text
    • https://s3.amazonaws.com/dewutexorob/88316971126.pdfIn PDF document text
    • https://8eccd3b7-fb20-4588-a5b5-4d8c58591879.filesusr.com/ugd/0e6328_1d35d6d6fbb14b8583118b41538d3ada.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011711.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11711 4580 bytes
SHA-256: 0a8905615caa0167a068f9491877e44b093a691496ceaf21722e532a299f0e93
font_01_sfnt_off000126ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126AB 11108 bytes
SHA-256: d44b620abd443b2346552224cfec9dc4d2c95d7b28fd5497508856e6b8ba80b4
font_02_sfnt_off00014c6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C6D 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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