Malicious PDF — malware analysis report

Static analysis result for SHA-256 4df217463aaae602…

MALICIOUS

PDF

66.6 KB Created: 2020-12-04 10:42:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 10a84cf9c092cb945ca18a3f2fc84499 SHA-1: 88c385b206a97df09bb6eef1d3330ffdaebde904 SHA-256: 4df217463aaae60233356c1049c5f259d2fd4a51ac6e2a9c132cc5833ff3a478
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF was flagged by multiple heuristics and a machine learning classifier as malicious. It contains numerous external links, including a link farm, and one specific URL that appears to be a lure. The presence of external links suggests an attempt to redirect the user to a potentially malicious site for phishing or further exploitation.

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
  • 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://traffnew.ru/strik?utm_term=click+clack+short+story PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4486994/normal_5fc8c7f7f024e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484804/normal_5fc79f222efbf.pdfIn PDF document text
    • https://wevupifusa.weebly.com/uploads/1/3/4/3/134356286/849142.pdfIn PDF document text
    • https://sojabejob.weebly.com/uploads/1/3/4/8/134890412/tipimapelufatul.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453344/normal_5fbb6ea9d4612.pdfIn PDF document text
    • https://gifavunebaxagem.weebly.com/uploads/1/3/4/3/134358660/tafawotopo-nujilixekifu-sudopisaxedoso-sememu.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/3a310112-cc87-4b97-8fdd-f2b62d8e8823/i_am_an_emotional_creature.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/691dd149-3468-467f-af1c-2dd0ea301759/17303556418.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7f73d17-9998-4cdb-8ff9-9c6504245d16/tawibemufuvozijuwutowuwi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14ccb1e4-861a-440c-8d9f-aacf68f4987e/64224378393.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81bdc11d-c0df-4b2d-afc0-c86338225fc6/el_libro_de_la_vida_worksheet.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2a873e5c7695ca9a6fc9e/t/5fc61dc9f8cdb769c6b47919/1606819275287/toxuwakuwonaz.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5f221972c46e3c965686/1606377251473/the_night_circus_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e28a1173-acd4-42af-aefb-e42d77453927/mexifolifako.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_off0000c971.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC971 4956 bytes
SHA-256: fbd74e85caac722e11387ed546bc22c566c849348a17b89170e81b522ff00ac4
font_01_sfnt_off0000da4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA4C 10460 bytes
SHA-256: 02570ea2ba64602e5a08af86227c51a2b8d6baaca6f179470540d48a8d93ed0f

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