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)
MD5: 41fedadf205d07c5edd26a93d7b3b77a SHA-1: aeb2c5c46b6d1e46773c67b434bcdc69e012effe SHA-256: 85315002b4ed2c3b43eb8f95b391c2be67692749495eb973648a477a59c09a9c
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malicious content delivery scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of an external URI suggests the document's purpose is to redirect the user to a malicious site, likely for phishing or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
    • https://cdn-cms.f-static.net/uploads/4416802/normal_6046ef43f1b66.pdf
    • https://static.s123-cdn-static.com/uploads/4451575/normal_5febd4df9a045.pdf
    • http://jasetukuxazep.22web.org/33677850501.pdf
    • https://static.s123-cdn-static.com/uploads/4487918/normal_5fc5c906e3b4f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/2395d5ec-d23b-4101-ba85-6e4556984d20/69691517985.pdf
    • https://uploads.strikinglycdn.com/files/61263f35-692d-454b-ae9e-f2cffec4a1b8/fijulon.pdf
    • https://s3.amazonaws.com/paropabaru/rekuvoxefazozafatal.pdf
    • https://uploads.strikinglycdn.com/files/4cda7437-cfc8-494a-813c-cff67cb094f4/the_summoning_cartoon_hangover.pdf
    • https://s3.amazonaws.com/kuboki/8294603296.pdf
    • http://salalew.epizy.com/wezuletikebusomisasu.pdf
    • http://pajamubo.rf.gd/48805369965.pdf
    • https://s3.amazonaws.com/webipejonavuv/kutojesukodejebabapa.pdf
    • https://s3.amazonaws.com/povelenavuviw/23878608903.pdf
    • http://vomoguzidazufi.rf.gd/kekekigavaze.pdf
    • https://uploads.strikinglycdn.com/files/70c12ffd-604c-45ba-a165-618e9954c612/jbl_lsr305p_mkii_review.pdf
    • http://sisawujeza.rf.gd/inches_to_feet_worksheet_3rd_grade.pdf
    • https://s3.amazonaws.com/zarevizebi/tedezimusig.pdf
    • http://dinukafewu.epizy.com/aifd_guide_to_floral_design_book.pdf
    • https://s3.amazonaws.com/memexelu/grohe_kitchen_faucet_leaking.pdf
    • https://uploads.strikinglycdn.com/files/fa69f7c5-dc71-435e-992e-966a863b1c9d/strategies_to_help_students_with_dyslexia_read.pdf
    • https://s3.amazonaws.com/vaxebisapesi/surah_yasin_in_english.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

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

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