Malicious PDF — malware analysis report

Static analysis result for SHA-256 02dcf8db12917278…

MALICIOUS

PDF

298.2 KB Created: 2021-04-22 10:25:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: b6ceaa3bb856f3ed0048d158857ecb31 SHA-1: b327159887d27d14de6d761d6ca8cb276f61a1d8 SHA-256: 02dcf8db1291727820b61a87978605f772fabc71c768aa344b7f5629bafc7301
136 Risk Score

Malware Insights

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

The PDF contains heuristics indicating it's a phishing lure, specifically using an image to trick users into clicking a link. The link redirects through an SEO redirector to a URL that appears to be a phishing page. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8821

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://dugedepap.ru/strik?utm_term=hindi+song+lyrics+starting+with+alphabet+n PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4376598/normal_601f81ce8452b.pdfIn PDF document text
    • http://sutovuresas.mygamesonline.org/fipovav.pdfIn PDF document text
    • http://kajejib.medianewsonline.com/luzokokonuxiduvobaxodukum.pdfIn PDF document text
    • http://piredvizhnik.com/contoh_report_text_global_warmingopj3b.pdfIn PDF document text
    • https://cdn.sqhk.co/derepinejabi/hedgiif/21511334304.pdfIn PDF document text
    • https://cdn.sqhk.co/jixuvepabu/w3wqjc1/download_battleground_pixel.pdfIn PDF document text
    • http://card2card.live/cra_z_knitz_instructions_scarfun12f.pdfIn PDF document text
    • http://ziwusis.getenjoyment.net/cirrhosis_treatment_guidelines.pdfIn PDF document text
    • http://guzexesuge.mypressonline.com/how_to_make_light_brown_by_mixing_colours.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412575/normal_604d98193ad35.pdfIn PDF document text
    • http://rabemedexisubis.mygamesonline.org/mercedes_glb_2020_preisliste.pdfIn PDF document text
    • http://rubeatyshop.xyz/mipajutizovivumozmp4.pdfIn PDF document text
    • http://pixell.store/weber_electric_bbq_home_depot3ss0v.pdfIn PDF document text
    • https://cdn.sqhk.co/worenora/Z495ijW/vepejofuwevoxuda.pdfIn PDF document text
    • http://kino-vezde.ru/48909698013kpi65.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446378/normal_605f78b31b8a4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370529/normal_5fec9b14ba723.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/67f36fb2-5d53-4d5a-8f5d-911e30241e73/6945433572.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fcd710d-c1fc-435c-bf06-ade20c2cb5c1/jebiginomu.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003e62b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3E62B 3572 bytes
SHA-256: 1aa93c5f78c4222e8bd18d71a019ee7451b8a18a7aad1c11fcfdc44fa5ef303c
font_01_sfnt_off0003f2e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F2E7 5632 bytes
SHA-256: 9cd1912fca5a816e6ebc2f31d412525e64e7b5871673c8be912cf8fe562b88ae
font_02_sfnt_off00040615.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x40615 3772 bytes
SHA-256: 13f1c1acb04f6a2c0c7809b473bb32c2578594c6ef10021f571feb2e59bba7cf
font_03_sfnt_off000411bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x411BB 22556 bytes
SHA-256: bff95cbf02ccf26126863127a351f7efd0b7db299259c4bf87159c96d09c9d0d
font_04_sfnt_off0004501a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4501A 16132 bytes
SHA-256: 0845746d8e0f76c2c57e53a5d0c2d2ba36ed31c4724e2802406f297ba1795667
font_05_sfnt_off00046548.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46548 17508 bytes
SHA-256: fac608b884cc57e5208a4e5493f1667d8aafae3fa44498b94b23138ac6689fe7