Malicious PDF — malware analysis report

Static analysis result for SHA-256 dad178ee9959016e…

MALICIOUS

PDF

71.4 KB Created: 2021-01-02 18:26:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: b7be14f7934941f385c8e0fb7084d5f1 SHA-1: b8d64b30b0eec35cf5686cdb287809689041927d SHA-256: dad178ee9959016ec5e2644c0890c436d439de3e1dfe7cad0ef96c12ce952f28
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of external links, many of which point to potentially malicious redirectors or link farms, as indicated by the 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' heuristics. The primary malicious URL identified is 'https://gettraff.ru/123?utm_term=organic+chemistry+john+mcmurry+9th+edition+solutions+pdf'. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/123?utm_term=organic+chemistry+john+mcmurry+9th+edition+solutions+pdf In PDF document text
    • https://rutebesutev.weebly.com/uploads/1/3/4/1/134131531/3418918.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://uploads.strikinglycdn.com/files/3d564232-26ac-4920-972a-3788c0bc577c/ximegirozabu.pdfIn PDF document text
    • https://s3.amazonaws.com/medetopuwofetut/falak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3c31bed-8f05-4d2b-a187-8e441387fc16/como_hacer_un_indice_de_tablas_en_latex.pdfIn PDF document text
    • https://s3.amazonaws.com/vavapekadoliti/51890034849.pdfIn PDF document text
    • https://s3.amazonaws.com/zagubip/eragon_game_pc_free_iso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6810f27c-1249-4b0a-826b-9c5432935146/75373079855.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b81aaaf7-2c1a-436e-b03e-b2c901b6ba1b/59970730459.pdfIn PDF document text
    • https://s3.amazonaws.com/kukazowox/wow_bfa_moonkin_pve_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/guluxosa.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/bose_quietcomfort_35_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ca40bc6-609c-4ee8-953f-1fd62c59aea2/xaxefizujewewupaxo.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/basic_spoken_english.pdfIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/button_badge_mockup_psd_free.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c9cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9CD 5812 bytes
SHA-256: cc800a74cd571fe4ecd5b22ec8c7ca32a6c163e11b4f83a5fdb52a68625afe42
font_01_sfnt_off0000dd6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD6C 10684 bytes
SHA-256: 46ec6f7877bcd4768132ace1cac701222a55ac9335a543cae5173d3501c9a418
font_02_sfnt_off000101eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101EB 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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