Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b1063ae892fa9a8…

MALICIOUS

PDF

98.5 KB Created: 2021-03-01 04:41:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: c8856b5d6fb4ddb961b1ef0f5e66f1bc SHA-1: a8d4efd38da068589b8b366260e2b904ccd45b40 SHA-256: 1b1063ae892fa9a89738eb3e11d1947d6ce7d37a497574195a8d50548da76169
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by multiple heuristics, including a high-confidence ML classifier and ClamAV detection. The PDF contains an external URI and an SEO redirector link pointing to 'https://gimoguvi.ru/strik?utm_term=2014+dodge+durango+citadel+v6+towing+capacity', suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to trick users into downloading further payloads or visiting malicious sites.

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
  • 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://gimoguvi.ru/strik?utm_term=2014+dodge+durango+citadel+v6+towing+capacity PDF link annotation
    • https://cdn.sqhk.co/parepejapoki/jejQjgm/6586360357.pdfIn PDF document text
    • https://cdn.sqhk.co/gagowuname/f2nnOsD/31244538701.pdfIn PDF document text
    • https://cdn.sqhk.co/bukoxomule/ejaWf9E/virus_software_for_iphone_7.pdfIn PDF document text
    • https://cdn.sqhk.co/bijukipuj/boibijz/spiral_lucky_block_mcpe_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409103/normal_602df28e88512.pdfIn PDF document text
    • https://cdn.sqhk.co/gijimexuv/hgj8ihp/sleep_sounds_lite_relaxing_sounds_for_sleeping.pdfIn PDF document text
    • https://cdn.sqhk.co/petebeki/hNhgjgn/grand_vegas_crime.pdfIn PDF document text
    • http://tumerasiwabuzip.22web.org/47172891704.pdfIn PDF document text
    • https://cdn.sqhk.co/nozelenid/ghZghvL/zivubemuvixuwokexajera.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://luxepiluwi.epizy.com/canon_printer_inkjet_selphy_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/vinejivunitego/graphing_linear_inequalities_worksheet_algebra_simplified_2015_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwotarotavuz/atf_box_latest_setup_file_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sugowubuf/organizational_behavior_case_study_answers.pdfIn PDF document text
    • http://gitogopafo.epizy.com/concept_maps_templates_for_microsoft_word.pdfIn PDF document text
    • https://s3.amazonaws.com/sudevejerifu/48584957003.pdfIn PDF document text
    • https://s3.amazonaws.com/lukepepe/gingival_biotype.pdfIn PDF document text
    • http://gizadopozi.epizy.com/trasformazione_libbre_chilogrammi.pdfIn PDF document text
    • https://s3.amazonaws.com/libusamagowuvo/77167632003.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012adc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12ADC 5792 bytes
SHA-256: 3b25d3f1aba1e7902ce0b10cdaea838217387058d64df8ec735d8139c424a2ca
font_01_sfnt_off00013ec6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EC6 11800 bytes
SHA-256: e16db6c3abdb1339b354e1b2df01853cf0e4cb0e4f36ea5a00cc521104e7ba9f
font_02_sfnt_off00016744.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16744 16060 bytes
SHA-256: 713933360072c9d59346590fad668f98c3603c6d2b72ed941ce85481f6af0b74

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