Malicious PDF — malware analysis report

Static analysis result for SHA-256 deb28f71a1cda668…

MALICIOUS

PDF

69.7 KB Created: 2021-03-29 06:16:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: dc2cb1f3257f73304cb8cea678907957 SHA-1: 21ca3e07187dd3bd28408c03c01689561bb9cc4c SHA-256: deb28f71a1cda668c1b0ee98a8f171778fffa2ff0c4335ad28c9af13f7f99f55
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI that directs the user to a suspicious URL, disguised as a search result for a book. This URL is likely intended to host a malicious payload or lead to a phishing page. The ClamAV detection and ML classifier strongly indicate malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://pelibifir.ru/wix?keyword=fyi+for+your+improvement+a+guide+for+development+and+coaching+%25284th+edition%2529 PDF link annotation
    • https://zitifulopesere.weebly.com/uploads/1/3/4/7/134722705/dugex_pazoma_tezagokuwomu_pujovugir.pdfIn PDF document text
    • http://rostov-mobile-doctor.ru/44880011374uskzt.pdfIn PDF document text
    • https://zabuxowinuj.weebly.com/uploads/1/3/4/8/134874463/7024029.pdfIn PDF document text
    • https://bofazereb.weebly.com/uploads/1/3/4/6/134675062/vasabo.pdfIn PDF document text
    • http://olymp-trade.top/cost_to_replace_citizen_watch_batteryqe0rd.pdfIn PDF document text
    • https://zonulezewuras.weebly.com/uploads/1/3/4/8/134890742/bolaginadepoja.pdfIn PDF document text
    • http://supsun-aero.com/dewalt_xtreme_12v_max_cordless_drillnjdk9.pdfIn PDF document text
    • http://epipog.com/luna_storia_reroll_tier_listko4jg.pdfIn PDF document text
    • https://lalibirubifo.weebly.com/uploads/1/3/0/8/130873838/sonawalefebadosozide.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://b32521b7-32ca-447e-9967-d27d0dce683d.filesusr.com/ugd/800b88_500cfeac07544a05902e02a156a17b7d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wolina/87447471504.pdfIn PDF document text
    • https://s3.amazonaws.com/tubukeganuji/80336520051.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8e3e582-b7a4-42e0-a759-bf97e0449a8d/dd_players_handbook_audiobook.pdfIn PDF document text
    • https://s3.amazonaws.com/wobuzisibal/premier_protein_shakes_chocolate.pdfIn PDF document text
    • https://s3.amazonaws.com/betefowubevat/bhakti_video_songs_mp4_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/nazekisigiduz/zunitezuvikitu.pdfIn PDF document text
    • https://601bead5-a720-4f65-98db-62fe2a42cb91.filesusr.com/ugd/0e52b4_5046f5fc0a8d478baad2c65146fd09cd.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/959aafd6-0419-4793-9a65-a20850df22dd/what_are_the_covid_numbers_in_the_us_today.pdfIn PDF document text
    • https://s3.amazonaws.com/boxalewijim/smart_ups_1500_replace_battery_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/pidufozu/mawuxagazapikasijuno.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c899.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC899 5632 bytes
SHA-256: 65492a5895e7bcfe1cbba45c088cddb709badf11a82261c55fce471f561a899c
font_01_sfnt_off0000dbac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBAC 9076 bytes
SHA-256: 973d8fbab61b403f7f8dcc646c8e3a70046362f5377663bdb39cf4397530a61d
font_02_sfnt_off0000fac0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAC0 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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