Malicious PDF — malware analysis report

Static analysis result for SHA-256 63d92622a5a5e72a…

MALICIOUS

PDF

69.2 KB Created: 2021-03-28 14:01:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e9103d39de55bf0643b6c43fb68e5e46 SHA-1: dca49d5fcc72c13a739f67d8aace436bc30c424f SHA-256: 63d92622a5a5e72a241143f507f013d5f4b7d57c3a72b24cff07f9f677c9cd10
186 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 0.9998

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://bologen.ru/wix?keyword=ginseng+prices+in+ky PDF link annotation
    • https://cdn.sqhk.co/zonigita/jcyTjap/14733380285.pdfIn PDF document text
    • http://bojosizupopope.22web.org/what_is_prepositional_phrase_give_examples.pdfIn PDF document text
    • https://zexajupa.weebly.com/uploads/1/3/4/6/134692079/6225ca86.pdfIn PDF document text
    • http://muzotom.22web.org/lab_technician_questions_and_answers.pdfIn PDF document text
    • https://mebotorafegamor.weebly.com/uploads/1/3/0/7/130739377/surumunenuvar-tizor.pdfIn PDF document text
    • https://malosana.weebly.com/uploads/1/3/5/3/135323031/zegub.pdfIn PDF document text
    • https://bedaxeribijone.weebly.com/uploads/1/3/2/8/132814155/tatelimav.pdfIn PDF document text
    • https://situtewazugigev.weebly.com/uploads/1/3/4/2/134265876/boremupidam.pdfIn PDF document text
    • https://cdn.sqhk.co/xewimoziwuvo/id6qy4t/pianistas_famosos_clasicos_youtube.pdfIn PDF document text
    • https://wapojopaboxijok.weebly.com/uploads/1/3/4/7/134747084/88b2103.pdfIn PDF document text
    • https://ragulifogikub.weebly.com/uploads/1/3/3/9/133986704/667972.pdfIn PDF document text
    • https://sizomejuxitiz.weebly.com/uploads/1/3/4/7/134748976/nugiguwe_wunukela_gugis_sovunepabexez.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/59151b4c-de19-4a9c-a449-4ef0ea49b863/how_are_parallel_and_perpendicular_lines_similar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6859315-4b17-4e16-9e8e-8e1604523894/jetikafaxobupegezud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce71b4ab-c34a-4b51-a2c5-959c6a31bd37/how_to_prepare_frying_oil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8754036a-7029-4082-a379-caa23fa6104d/57771781393.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8612d0b8-323a-4f8b-bc24-f1ffe30ed7c4/metikobufozatitolor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08de6507-742a-4af4-92e9-b87ebc632a0b/41878752498.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/007e29f8-d9fa-4cf0-9007-ec04ab993fb1/zedemarorafipezani.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_off0000d1b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1B9 5056 bytes
SHA-256: f7da38733bc8fe95459b815fca465e558826252f15f0c40e3c7095e8f6a46b67
font_01_sfnt_off0000e317.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE317 10440 bytes
SHA-256: 5fa4d39fa4cb5bc4281d74662cd5f79850d49fbd14d2d22136ecc6e8d1a3ac4c

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