Malicious PDF — malware analysis report

Static analysis result for SHA-256 25a024d2f140ddbb…

MALICIOUS

PDF

81.5 KB Created: 2021-03-16 22:40:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 932fd1714467fe4aca1d44f4d2960c1d SHA-1: ba70bf47c32931c845461dc1c1367903e3291560 SHA-256: 25a024d2f140ddbbdecea4de0b6e780cda50b65d2e4dc6cdc40ef61cb7a7db9b
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as a phishing trojan and a machine learning classifier indicated a high probability of maliciousness. The document contains an embedded URI pointing to a suspicious domain, likely intended to trick users into downloading further malware or visiting a phishing site. No scripts were extracted, but the presence of external URIs suggests an attempt to redirect the user to a malicious resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://golowaki.ru/wix?keyword=charge+interactions+physics+classroom+worksheet+answers PDF link annotation
    • http://nakodinita.scienceontheweb.net/at_what_age_do_toddlers_draw_faces.pdfIn PDF document text
    • https://jurogewogil.weebly.com/uploads/1/3/4/3/134318518/gefugavuvume.pdfIn PDF document text
    • https://talunijepi.weebly.com/uploads/1/3/4/5/134599753/bdb20.pdfIn PDF document text
    • https://volenasidopawo.weebly.com/uploads/1/3/4/2/134265528/sufalalopomi.pdfIn PDF document text
    • http://purpless.vip/nesipamuzpnji9.pdfIn PDF document text
    • http://movizopolu.medianewsonline.com/lodagugixawunexuwaxivu.pdfIn PDF document text
    • http://blankid.ru/dm_screen_woodw2grn.pdfIn PDF document text
    • https://jawubabob.weebly.com/uploads/1/3/1/0/131070379/funulupimos.pdfIn PDF document text
    • http://kind-insta.site/android_games_convert_to_pc_freerqha3.pdfIn PDF document text
    • http://istra-backwater.ru/what_are_the_rules_of_the_game_of_life6s3hr.pdfIn PDF document text
    • http://dapovevi.mywebcommunity.org/lasupusoxewumaxexujo.pdfIn PDF document text
    • http://rilomenininun.getenjoyment.net/acer_aspire_e5-571_specifications.pdfIn PDF document text
    • http://fkpravo.ru/gotapiwxjz0.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/supefujoxopubu/mexexogikinaja.pdfIn PDF document text
    • https://s3.amazonaws.com/benuka/96124413168.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87234618-5e9e-4b3d-982c-6c18f6128736/dasewewomopiwipafojibi.pdfIn PDF document text
    • http://wenares.myartsonline.com/potonolezifot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cdc1009-7c11-4731-9ee0-eabab7d24480/mapimedogiwimewevilo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64159c39-0b20-42fe-85ba-fc5e8ebfdca3/61543420293.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/wallpaper_couple_anime_hd.pdfIn PDF document text
    • https://bf808793-8b46-4c54-8b11-319763181fa0.filesusr.com/ugd/0d018b_32ef0c825b644bdca567616f97e31b1c.pdf?index=trueIn PDF document text
    • https://4ec63ec4-77bf-4499-900e-7c522af20654.filesusr.com/ugd/35bdb9_9d8cfd8de948438e8055ccb1d61bd062.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2718f367-b0e9-44e6-95c5-e29f4166696a/lilid.pdfIn PDF document text
    • https://s3.amazonaws.com/pirosisob/72055443590.pdfIn PDF document text
    • https://s3.amazonaws.com/datarofapakil/8992472440.pdfIn PDF document text
    • https://a4758657-6aaa-4003-b0f6-1957e800abfd.filesusr.com/ugd/70c1f8_ea9a999b5a7d4c84beb3520290c3be5c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d3d015b-e2f0-4958-b30d-796169090426/jojo_stand_tier_list_part_5.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_off0000eaf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAF8 5508 bytes
SHA-256: a035e342bfb368d48040c5157b9250abc523d04688003788ef7e98fb23cc4081
font_01_sfnt_off0000fda7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDA7 10660 bytes
SHA-256: 51f2bc7e1f96283a83f171fa4f68a27312dbbeadde799ecb3d2b0beaaa208ca1
font_02_sfnt_off0001222f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1222F 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501

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