Malicious PDF — malware analysis report

Static analysis result for SHA-256 44110cae48a653cf…

MALICIOUS

PDF

74.8 KB Created: 2020-11-16 15:42:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-05
MD5: f0d90598f4818ab22e05c565fefb1ec4 SHA-1: aac6a7b1c77b6d3b1752b8eb00473ed3c4cd4098 SHA-256: 44110cae48a653cfb29d94c65874bf56c3d648f3dd7fce658ef28ac073ff25a2
254 Risk Score

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://s3.amazonaws.com/mogipegi/monthly_calendar_planner_excel_template.pdf In PDF document text
    • https://s3.amazonaws.com/wemupajese/30471363114.pdfIn PDF document text
    • https://gettraff.ru/123?utm_term=julius+caesar+multiple+choice+test+questions+and+answersIn PDF document text
    • https://deruwatago.weebly.com/uploads/1/3/4/0/134096830/gemoze-femumuvixa-korowabe.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000c88f.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000c88f.bin)
    • https://uploads.strikinglycdn.com/files/86ac0b0d-34d3-4a10-978d-5ce9f165f247/zhentarim_d_d.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c6fa16c-8778-455b-8067-61bc60308661/new_balance_work_shoes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/774cb1ef-a7e3-4619-a27b-04be4a579ba3/miterulufuxuvexojetuwi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c76f35f1-0e7f-4ab5-b5f0-1f78e6764f07/ponuvidoratorilolajo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8469a7be-4db5-4b5b-81e6-632aab558792/fowejezefigowesolutumepi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ee0c505-e927-446c-b057-3b73abe5d142/66131760858.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48c40171-ae1c-4f09-b173-67f598543048/sikurojezinawotabop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e5c9387-85f3-48ff-bec9-b011bcf20a6a/17712017567.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 extracted file (font_00_sfnt_off0000c88f.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off000108f8.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off000108f8.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c88f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC88F 5520 bytes
SHA-256: b759c13beeb10b556f26f998c39f8b9023881515c9af4d892a0b9dbe76ac3e1c
font_01_sfnt_off0000db34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB34 14584 bytes
SHA-256: 27caf9ebe30852dc9fa42e2dd5ef867199489c5d52eb8b3b7121324310278367
font_02_sfnt_off000108f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108F8 16144 bytes
SHA-256: 764fe263e68fd20aff2bbd96e69f5a400d440299d02096befa162391f913c7cf