Malicious PDF — malware analysis report

Static analysis result for SHA-256 42419862b58404bb…

MALICIOUS

PDF

80.8 KB Created: 2021-03-11 00:34:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 49106800230accf67b15211344a6bb29 SHA-1: 83251dda97fa7498423d35621ce3049ddbaf88a5 SHA-256: 42419862b58404bbc2f7a35dc9574e468465f75053442abe50ae1adc4a90b458
164 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 presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://crophysi.ru/award?keyword=bodyweight+workout+for+beginners+pdf PDF link annotation
    • https://cdn.sqhk.co/gakilofod/jyiaZYo/dimufugimipajakemu.pdfIn PDF document text
    • https://cdn.sqhk.co/tunuviju/jeXggid/54707981310.pdfIn PDF document text
    • https://cdn.sqhk.co/feziwetesene/cgghusF/airplane_disasters_2020.pdfIn PDF document text
    • http://kamikofonem.mygamesonline.org/63312858795.pdfIn PDF document text
    • https://jokuvaput.weebly.com/uploads/1/3/4/5/134589987/lufusikazidaxekuzipa.pdfIn PDF document text
    • https://xugeragerowet.weebly.com/uploads/1/3/4/6/134641260/fasiwaziwo_datuparezaw_benetelexat.pdfIn PDF document text
    • https://dufofumiwiz.weebly.com/uploads/1/3/5/3/135309849/8798210.pdfIn PDF document text
    • https://kerozuvesiduzam.weebly.com/uploads/1/3/4/3/134375161/7090698.pdfIn PDF document text
    • https://cdn.sqhk.co/sixerusesebu/qbggDgd/wijaboluwugotefimivif.pdfIn PDF document text
    • https://sigiduba.weebly.com/uploads/1/3/1/3/131384121/0f828e.pdfIn PDF document text
    • https://cdn.sqhk.co/peferitukofa/jdlheHu/staples_pencil_box_plastic.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jazofi/zovabezafulawabadu.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/apache_server_for_php_free.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/21676275234.pdfIn PDF document text
    • https://s3.amazonaws.com/warapagefasovi/sims_3_pets_xbox_360_cheats_fire_meter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d27c16e8-92ae-401f-b7af-6fc2a0fcaf37/tavufale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c6d8de4-61af-491e-9ba1-ebf5509a315a/the_rational_male_preventive_medicine.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/beelzebub_season_2_subtitle_indonesia.pdfIn PDF document text
    • http://noroved.myartsonline.com/sijefigu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74c325f9-cd62-4250-8ffb-3c89198814a7/88586975667.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/gagagonudegifen.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ffeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFEB 5508 bytes
SHA-256: 7a3eea14bf1a23485e846cdf9eb146134b7f584605850cf84d282d135c2f985d
font_01_sfnt_off000112c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112C7 10240 bytes
SHA-256: f10504b77ddb63440d88b9f77625abb1089b25927adedddf071af4011d6feca3

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