Malicious PDF — malware analysis report

Static analysis result for SHA-256 24e626de67e7aa95…

MALICIOUS

PDF

73.6 KB Created: 2021-03-01 08:25:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: b5fbaaac3684996d076ea2bab4744b7d SHA-1: dd31d66d586f3c1b74dddd95d1aa0c383d1e982a SHA-256: 24e626de67e7aa95c1ec9ded6dc2fd0007b98d375d4142f3f059fc73a5e05714
196 Risk Score

Malware Insights

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

The PDF contains numerous external links, identified as a link farm for SEO purposes, with a primary lure pointing to 'black magic love spells'. This suggests a phishing or malware distribution attempt. The ClamAV detection and ML classifier further support its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://lozipotod.ru/wix?keyword=black+magic+love+spells PDF link annotation
    • http://infonewsuk.site/rival_stars_basketball_mod_android_12ne6w.pdfIn PDF document text
    • http://true-board1.club/fairy_tales_in_english_new_stories_20195nngv.pdfIn PDF document text
    • http://avtoshkola-region26.ru/56224024762icw5g.pdfIn PDF document text
    • https://womegirig.weebly.com/uploads/1/3/4/5/134506381/rinogaf.pdfIn PDF document text
    • http://businesslinecenter.com/vuxobitirixageb2b5o.pdfIn PDF document text
    • https://daxigowopijadek.weebly.com/uploads/1/3/0/8/130814785/435900.pdfIn PDF document text
    • http://rgtuitp.ru/como_se_sabe_si_el_bebe_tiene_sindrome_de_down11la2.pdfIn PDF document text
    • http://copyright-rules-help.com/jekotikipegihr6ly.pdfIn PDF document text
    • https://nosozekime.weebly.com/uploads/1/3/4/6/134634018/8575889.pdfIn PDF document text
    • http://bonusiotsbera.online/193832592124vazt.pdfIn PDF document text
    • http://voztrans.ru/structure_of_a_virus_bacteriophage_worksheet52rub.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/tobojelusiwi/chaffoteaux_pigma_green_evo_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/gisujubolidine/xowuwevikonasodezazafi.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/importance_of_teamwork_in_business.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/31989842649.pdfIn PDF document text
    • https://s3.amazonaws.com/xapidajovaji/duvalay_sheets_nz.pdfIn PDF document text
    • https://s3.amazonaws.com/gajakelegeza/namaz_dualar_trke_okunuu.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_off0000e4c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C8 5328 bytes
SHA-256: 94f77037d320e8454566e9e61fef3461875b79f904cac116dda89b2ad0cb4a6e
font_01_sfnt_off0000f6ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6ED 10220 bytes
SHA-256: c484b9e20023a2153bde0f00af015679dadbc98670030b29d0dcf0d3e4679ab9

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