Malicious PDF — malware analysis report

Static analysis result for SHA-256 dab98420564744fc…

MALICIOUS

PDF

75.9 KB Created: 2021-05-23 19:43:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: aea55fdf26065ab4d72d111f47993076 SHA-1: b007e9a3c96778edf08c73dee89ecf8a08a3213e SHA-256: dab98420564744fc827d9a455d804692c4ade2032305277bec471a673edf66a7
156 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 0.9993

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://jottigo.ru/strik?utm_term=adobe+flash+player+f%25C3%25BCr+apple+ipad PDF link annotation
    • https://nijuvijoz.weebly.com/uploads/1/3/1/4/131408832/sinigatenupez.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472506/normal_606013492b6b6.pdfIn PDF document text
    • https://gituwelogasof.weebly.com/uploads/1/3/2/8/132814340/64e50d6f04a4f.pdfIn PDF document text
    • https://damemebu.weebly.com/uploads/1/3/5/3/135316778/sejazeba-lofar-pugodepoga-vimojevixojox.pdfIn PDF document text
    • https://zifosugelupoz.weebly.com/uploads/1/3/4/6/134693972/c1676.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384649/normal_604faa0222075.pdfIn PDF document text
    • https://kulojimafad.weebly.com/uploads/1/3/4/5/134518235/959031a04d6011.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472495/normal_6041931b36bf0.pdfIn PDF document text
    • https://towutibe.weebly.com/uploads/1/3/4/0/134012467/berefakukixoxa-vonoru.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476590/normal_6003dc88002f4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375507/normal_5ffeb4b047b77.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483103/normal_5ff7b979be390.pdfIn PDF document text
    • https://kuvomudoriri.weebly.com/uploads/1/3/1/4/131406544/biwevuje.pdfIn PDF document text
    • https://gazavado.weebly.com/uploads/1/3/4/3/134331045/wemuzifijezisodejim.pdfIn PDF document text
    • https://gixatupugibezi.weebly.com/uploads/1/3/5/2/135296842/cd57a0b8a540c4.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/xupimaral/charitable_donation_request_form_template.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/cool_meme_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/jitimesolagun/94530791815.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/suredivekabeporinotowi.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/clinical_laboratory_science_review_a_bottom_line_approach_5th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/gnossienne_1_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/barcode_scanner_for_android_phones_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/difference_between_android_and_ios_app_design.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_off0000e99f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE99F 5480 bytes
SHA-256: 6347ee3b2e0bf0eeaa03a1f3998a79b98afb4e0ec55a6a2eb060d0ea46c8ad85
font_01_sfnt_off0000fc0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC0E 10668 bytes
SHA-256: 9f79d42f774839b1353b5774fb0cf5c938630b49ce1a559276f12aa9b5663644

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