Malicious PDF — malware analysis report

Static analysis result for SHA-256 85315002b4ed2c3b…

MALICIOUS

PDF

128.8 KB Created: 2021-04-05 05:33:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 41fedadf205d07c5edd26a93d7b3b77a SHA-1: aeb2c5c46b6d1e46773c67b434bcdc69e012effe SHA-256: 85315002b4ed2c3b43eb8f95b391c2be67692749495eb973648a477a59c09a9c
136 Risk Score

Malware Insights

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

The PDF contains a high-severity heuristic indicating it's an image lure linking to an SEO redirector, identified as a free-download phishing attempt. The primary malicious URL, 'https://maypoin.ru/wix?keyword=spanish+southern+accent', is directly associated with this redirector. While no scripts were explicitly extracted, the PDF structure and the nature of the redirector suggest an attempt to lure users to a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/wix?keyword=spanish+southern+accent PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4416802/normal_6046ef43f1b66.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/rekuvoxefazozafatal.pdfIn PDF document text
    • https://s3.amazonaws.com/kuboki/8294603296.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451575/normal_5febd4df9a045.pdfIn PDF document text
    • http://jasetukuxazep.22web.org/33677850501.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/kutojesukodejebabapa.pdfIn PDF document text
    • https://s3.amazonaws.com/povelenavuviw/23878608903.pdfIn PDF document text
    • https://s3.amazonaws.com/zarevizebi/tedezimusig.pdfIn PDF document text
    • https://s3.amazonaws.com/memexelu/grohe_kitchen_faucet_leaking.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487918/normal_5fc5c906e3b4f.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/surah_yasin_in_english.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2395d5ec-d23b-4101-ba85-6e4556984d20/69691517985.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61263f35-692d-454b-ae9e-f2cffec4a1b8/fijulon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cda7437-cfc8-494a-813c-cff67cb094f4/the_summoning_cartoon_hangover.pdfIn PDF document text
    • http://salalew.epizy.com/wezuletikebusomisasu.pdfIn PDF document text
    • http://pajamubo.rf.gd/48805369965.pdfIn PDF document text
    • http://vomoguzidazufi.rf.gd/kekekigavaze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70c12ffd-604c-45ba-a165-618e9954c612/jbl_lsr305p_mkii_review.pdfIn PDF document text
    • http://sisawujeza.rf.gd/inches_to_feet_worksheet_3rd_grade.pdfIn PDF document text
    • http://dinukafewu.epizy.com/aifd_guide_to_floral_design_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa69f7c5-dc71-435e-992e-966a863b1c9d/strategies_to_help_students_with_dyslexia_read.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001978e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1978E 5092 bytes
SHA-256: fe732d29cdd5cdb70d2f464c24de4a9b985f2b69147bd24c3536f4f73ed3f6ad
font_01_sfnt_off0001a8d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A8D9 18228 bytes
SHA-256: a4828198bb6b4312bfcd3f3f199579bb5b20328d9d9f7c1383cc006cf174644e
font_02_sfnt_off0001e04b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E04B 16188 bytes
SHA-256: 6f37f859521bb7085494b614750b29a097ece4d74f652abeb4704c9c3c139623