Malicious PDF — malware analysis report

Static analysis result for SHA-256 0607726b0057f47e…

MALICIOUS

PDF

92.9 KB Created: 2021-04-03 16:07:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-28
MD5: 0197f47746c745b179099582d8cce35c SHA-1: a6df0e0cce27929afe6f6e408dcea2977e0d698e SHA-256: 0607726b0057f47e10bf0194f07d8c70ae77fd0e094665b27ec5d8fafa33747b
184 Risk Score

Malware Insights

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

This PDF file contains a link to a known malicious redirector, indicating an attempt to phish or deliver malware. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were extracted, the embedded URL points to malicious infrastructure, likely serving as a lure for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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
  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://crophysi.ru/award?keyword=biology+project+for+class+12+pdf+on+aids In PDF document text
    • http://nokasosozigof.mypressonline.com/9909448038.pdfIn PDF document text
    • http://hookup753.fun/mvc_.net_core_2.0_tutorial805ig.pdfIn PDF document text
    • http://zitalogeloluwiw.mygamesonline.org/29020393948.pdfIn PDF document text
    • https://cdn.sqhk.co/pukefoxer/fEdifji/speedy_cash_near_me_now.pdfIn PDF document text
    • http://filfex.ru/27445291661xerwh.pdfIn PDF document text
    • https://cdn.sqhk.co/tokititagiwe/Zgfhbhg/muredarepexudewopu.pdfIn PDF document text
    • http://bulibujirifubof.scienceontheweb.net/gelumojiwujafumujekos.pdfIn PDF document text
    • http://favodokoleti.mypressonline.com/third_world_countries_meaning.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/78bd9d8f-8e52-4aee-a336-2f01df79dfca/vojumugadafewusi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/226c5bff-26fe-4a8d-89bc-8c802298558a/xalotirekisumovid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92bc5238-a7f8-4b28-b47f-7c4510b868bf/pazobuvuvol.pdfIn PDF document text
    • https://s3.amazonaws.com/fonibinaraj/avengers_endgame_official_soundtrack.pdfIn PDF document text
    • https://s3.amazonaws.com/tokit/27897013427.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0e56b25-1aa0-48a5-ba3f-88f5f11ccd30/rawonamob.pdfIn PDF document text
    • https://s3.amazonaws.com/tuletivotarupu/kasukatofewokepafurew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/971e0a0b-6917-4c91-80e7-511bebc4206e/daxufepupaginozopej.pdfIn PDF document text
    • https://s3.amazonaws.com/xeponodij/jokipobijotodopesulu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/486b6d73-e909-4f6d-8ae1-cba05f95104d/zedelilezexizeramufufoki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2281007-eb18-488d-bef5-1b861ae73eb8/diablosport_intune_i3_tuner_14-16_5.3l_silverado_1500.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ecc8237e-83e7-4f7f-896f-bc7d5a244a32/norton_anthology_of_world_literature_vol_d_e__f.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/279a2498-66d9-4300-b780-0de803a102ec/rexexilefefamoju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f326a898-fed1-4836-8982-ac235f5b3082/kufepedeva.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_off00011708.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11708 5732 bytes
SHA-256: b2870280d55ceaee7ad789a8a57adc936d2f878b979d83d8e559160328aaad55
font_01_sfnt_off00012abb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12ABB 11064 bytes
SHA-256: 395b78b353c981745bf60eb9d67596120180d81e6a1ed5f2d185f643442e6e87
font_02_sfnt_off000150c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x150C6 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd