Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d98b1de853986ec…

MALICIOUS

PDF

152.6 KB Created: 2021-03-16 07:44:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 6129c218a39af4d7adbd10a92066b03b SHA-1: b5e4b5e2305c536ae55e152feba05c62d98b0cf5 SHA-256: 3d98b1de853986ec5c125adf0f24b06359d2a810a2d18b63a76065aa809e129f
136 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded URI that redirects to a URL associated with phishing, disguised as a free download. The document body is heavily obfuscated, but the presence of a redirector URL suggests an attempt to lure the user into a phishing or malware download scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9935

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://xezojetit.ru/strik?utm_term=2011+jeep+wrangler+unlimited+owners+manual+pdf PDF link annotation
    • http://itravelimpressions.com/aye_dil_laya_hai_bahar_mp3_songf3nqm.pdfIn PDF document text
    • http://genoray.pro/22169510jitw3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426408/normal_60154c4d63e0e.pdfIn PDF document text
    • http://xiwakaravivomik.scienceontheweb.net/ruger_mini_14_10_round_magazine_amazon.pdfIn PDF document text
    • http://de-bewertung-id2842384.icu/what_size_tire_is_best_for_flippingt1xtr.pdfIn PDF document text
    • http://espaceclient-cmb.com/48610401504z9h2o.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409610/normal_5fd051dca763f.pdfIn PDF document text
    • http://kasaxeko.mypressonline.com/24381557511.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456377/normal_6016e5adb645c.pdfIn PDF document text
    • http://tideparipawovu.mygamesonline.org/93847875510.pdfIn PDF document text
    • http://zoguponuwuxoli.medianewsonline.com/tijari.pdfIn PDF document text
    • http://dayzcommunity.info/26852340356pid92.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/zuxime/printable_thor_stormbreaker_template.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/buwirepuxiwipenelo.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/kuzivigozawuxowi.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/chupke_chupke_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99c3c9ea-1335-4265-b04e-5095a2c93a74/insinkerator_excel_parts_list.pdfIn PDF document text
    • https://s3.amazonaws.com/taguxif/doraemon_movies_in_telugu_2019_mp4.pdfIn PDF document text
    • http://wowutuzineko.myartsonline.com/dell_optiplex_760_ram_support.pdfIn PDF document text
    • https://s3.amazonaws.com/wetowuzuxit/adobe_flash_professional_bagas31.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1056242d-a03c-41f8-bdc9-9a5212f57918/38175473065.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/777158c6-53c0-4022-b8ec-64cc3a7e8983/69098402209.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/kuwapexuwimexib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4653e1cd-9eac-468d-ba13-79fc4622a2bc/haynes_repair_manual_for_2007_dodge_caliber.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/badlapur_movie_full_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/xopugup/38231358743.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_off0001febb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FEBB 5760 bytes
SHA-256: 05b7694625db24ad6c45f345a24f90efa7ba9f1f401d90e1ab2bc07989fe9514
font_01_sfnt_off00021260.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21260 12928 bytes
SHA-256: 68e71ed942010994ef8b2c8e8128f401809d7e859f395323d24ac3ac82524bca
font_02_sfnt_off00023d51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23D51 16060 bytes
SHA-256: ae97ebdbf5cb6679ee3ae7f6f8963da9ec2437ada1f672a33085bc8cbe806833