Malicious PDF — malware analysis report

Static analysis result for SHA-256 0690eb55fe7fb1f5…

MALICIOUS

PDF

76.2 KB Created: 2021-02-16 23:39:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 577b38688a31065b2e82dac2fbada28e SHA-1: adeb6359cae7fe5eef6ffde8312fecd62219dafc SHA-256: 0690eb55fe7fb1f5b3685245535d79d9699fb5f7a67612b1f01d59c0a4415a0b
254 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple critical heuristics as malicious, including a redirector link and a link farm. The embedded content, though heavily obfuscated, appears to be a lure related to 'Airbus a319 seating united', directing users to malicious infrastructure. The ML classifier also strongly indicated maliciousness.

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
  • 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.
  • 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.
  • 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://crophysi.ru/wix?keyword=airbus+a319+seating+united In PDF document text
    • https://cdn-cms.f-static.net/uploads/4470696/normal_60276ccd05f55.pdfIn PDF document text
    • https://xomowozijirogap.weebly.com/uploads/1/3/4/6/134667332/b083cb0.pdfIn PDF document text
    • https://cdn.sqhk.co/kerutadit/ibjhjc6/advance_auto_parts_locations_nj.pdfIn PDF document text
    • https://cdn.sqhk.co/nilimijano/XM0idoN/rain_crazy_car_racer_australia.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452169/normal_5fcbee25801e3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373526/normal_5fdebaea1e125.pdfIn PDF document text
    • https://cdn.sqhk.co/vawadawuleja/iZ27Mig/dry_ice_blasting_equipment_suppliers.pdfIn PDF document text
    • https://cdn.sqhk.co/desogepupema/rhfghrw/biwemafegitani.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367004/normal_6019050e89d92.pdfIn PDF document text
    • https://cdn.sqhk.co/lidupusumoj/W7iHoWv/sas_zombie_assault_3d.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/fomudebipefasu/kilivujowob.pdfIn PDF document text
    • https://s3.amazonaws.com/mogedozara/centricity_practice_solution_12_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/kewuxejikiwe/pulsar_220_top_speed_video_free.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/zarederusoru.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_off0000ec10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC10 5460 bytes
SHA-256: 79d4d5abdfbce15a340390466f2faa0446b2bccbdab08a7cde5cefcb4d96cafc
font_01_sfnt_off0000fea8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEA8 10952 bytes
SHA-256: 795f6a7b8400c17ffa1cb66646f1ff4090779c96fd5dfe706d274d41d8457099

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