Malicious PDF — malware analysis report

Static analysis result for SHA-256 6614971b64f90a84…

MALICIOUS

PDF

75.1 KB Created: 2021-06-07 07:56:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 4643139a97a295642f5af982fe9e46ca SHA-1: 8c63ce79c4b6c1513d290c2b7a80cd83a61acac4 SHA-256: 6614971b64f90a840a48bc197d59a0641451f0509590f04f9b200f8dd4a93f4b
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 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 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://archism.ru/pbw?utm_term=can+i+update+my+samsung+galaxy+tab+2 PDF link annotation
    • https://rowimunikak.weebly.com/uploads/1/3/5/3/135346477/lukilaronivuf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389824/normal_60ba2f18327ca.pdfIn PDF document text
    • https://wopamogifit.weebly.com/uploads/1/3/4/3/134341426/4b338f4c6a.pdfIn PDF document text
    • https://xokufilamiv.weebly.com/uploads/1/3/1/4/131437438/sagemivunoba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426828/normal_60609d56a2f6a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493905/normal_605100a6f3f21.pdfIn PDF document text
    • https://lovefuzabuzonif.weebly.com/uploads/1/3/4/1/134109130/2242329.pdfIn PDF document text
    • https://felefufo.weebly.com/uploads/1/3/4/7/134768155/36b1ab1becd.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/2ba9e415-9ff4-4a53-ae13-21e830c020b0/jibapinipevomamikaki.pdfIn PDF document text
    • http://sekodegaxex.pbworks.com/f/6444995932.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40f5f006-91e4-4014-b44c-96938ab8ae8c/pack_and_play_changing_pad_cover.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d89e299a-b810-40f4-ba46-64fc7311f599/puwasopebitafapuf.pdfIn PDF document text
    • http://bujolajoxek.pbworks.com/w/file/fetch/144529773/how_to_take_professional_pictures_with_iphone_11_pro_max.pdfIn PDF document text
    • http://pukagij.pbworks.com/w/file/fetch/144560901/sesosunigowoj.pdfIn PDF document text
    • http://pebokuvog.pbworks.com/w/file/fetch/144578391/chetan_bhagat_book_in_hindi_download.pdfIn PDF document text
    • http://lenivuzuk.pbworks.com/f/sobixesimefatajisi.pdfIn PDF document text
    • http://dejimebez.pbworks.com/w/file/fetch/144421122/surah_al_fath_in_arabic.pdfIn PDF document text
    • http://saladolu.pbworks.com/f/zisaremukarizasikipatez.pdfIn PDF document text
    • http://numefen.pbworks.com/f/53519694819.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_off0000e689.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE689 5532 bytes
SHA-256: f3948fef412ac8d85b3b1cf9bd4aec5507a51cd788236e3aacde2cb631f39e03
font_01_sfnt_off0000f957.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF957 11040 bytes
SHA-256: d867373ff620022fe10f405f78707675e74f579e787a90361e8f242df82af963

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