Malicious PDF — malware analysis report

Static analysis result for SHA-256 740a772a722ea56d…

MALICIOUS

PDF

64.0 KB Created: 2021-02-18 10:40:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 8664ef9d081e9384ef2d98973a68526b SHA-1: 42880ecb77ccb3a1819297116eff7ad8a19c2a9c SHA-256: 740a772a722ea56d37d8cb953fb50607eec4d90ab588bf7655dbfe3a4b02f4cd
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file contains numerous external links, many of which point to SEO redirectors and link farms, indicating a phishing or scam attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded URLs, such as 'https://jottigo.ru/strik?utm_term=reset+sony+bluetooth+headphones+wi-c300', are used to redirect users to potentially harmful content, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://jottigo.ru/strik?utm_term=reset+sony+bluetooth+headphones+wi-c300 PDF link annotation
    • https://buzijivugaza.weebly.com/uploads/1/3/4/7/134709386/7927105.pdfIn PDF document text
    • http://beststudent.space/94301973574l7a1p.pdfIn PDF document text
    • http://lotto-investclub.com/58298398818k1soq.pdfIn PDF document text
    • http://islta.fun/delokaxeve1r23h.pdfIn PDF document text
    • http://tovelksa.website/picostation_m2_factory_resetfez87.pdfIn PDF document text
    • https://lomofoxagut.weebly.com/uploads/1/3/4/5/134524577/zobekogovebuzan_livixujakawese.pdfIn PDF document text
    • https://xivapumi.weebly.com/uploads/1/3/1/6/131606059/5279609.pdfIn PDF document text
    • https://cdn.sqhk.co/boxokozofe/h7dijnZ/dinosaur_zookeeper_games_free_online.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/kigavanus/inspiring_synonym_informal.pdfIn PDF document text
    • https://s3.amazonaws.com/bejikefowu/annual_report_apple_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/bershka_platform_ankle_boots.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/automatic_or_manual_car_check.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_off0000be30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE30 5744 bytes
SHA-256: 59c68fca3dff1bdef479727be13b86f714e9a1b0bc356697b01291fc835e8f14
font_01_sfnt_off0000d1d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1D8 9756 bytes
SHA-256: 9c71a78e84afc5a4f04c0b86ba783ecb701f0d1724b5ab42cffce5eb59b533ed

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