Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f4fe19daa38c250…

MALICIOUS

PDF

85.5 KB Created: 2021-04-15 12:31:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 47f020a208e8ad2673cce3f70b76cbcb SHA-1: c2f9eda8873f2870d45322bb2c36308102a25d9c SHA-256: 1f4fe19daa38c250d97374ecc61facf31a376f2106fc2aa9d1fce7506407650c
136 Risk Score
Tags
free-cdn-ebook-manual-lure

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, indicating a high likelihood of malicious intent. The presence of a PDF_SEO_UTM_REDIRECTOR_LINK heuristic suggests a phishing lure, likely attempting to trick users into believing they are viewing product pricing information. The embedded URL leads to a redirector, which likely serves as a gateway to a malicious payload or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://fokemale.ru/strik?utm_term=hoover+floormate+spinscrub+500+price PDF link annotation
    • https://cdn.sqhk.co/soziwariru/jcNZgjh/darukitev.pdfIn PDF document text
    • http://bulepozobagepud.mygamesonline.org/mibokojenuropeposabera.pdfIn PDF document text
    • https://cdn.sqhk.co/naforokafe/bhg3jcJ/12111809387.pdfIn PDF document text
    • https://cdn.sqhk.co/pufuxarabo/kTyTU6X/chalo_na_wali_movie.pdfIn PDF document text
    • http://jipolavex.medianewsonline.com/msds_borax.pdfIn PDF document text
    • https://cdn.sqhk.co/ribafesupuro/hathfhj/pc_emulator_for_ps1_games.pdfIn PDF document text
    • http://luwogexejel.getenjoyment.net/2020_kpss_corafya_video_ders_notlar_benim_hocam_yaynlar.pdfIn PDF document text
    • https://cdn.sqhk.co/jupozaregu/oQKifTy/dirt_bike_racing_game_download.pdfIn PDF document text
    • https://cdn.sqhk.co/miwataxanis/yCujihj/dual_desk_home_office_ideas.pdfIn PDF document text
    • https://cdn.sqhk.co/nosilaxuziz/t2hdhfT/ledokepekika.pdfIn PDF document text
    • https://cdn.sqhk.co/tajiwikiter/hOfjehh/how_to_raise_a_child_with_adhd.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://s3.amazonaws.com/sinamozagemoger/singer_touch_and_sew_7462_foot_pedal.pdfIn PDF document text
    • https://s3.amazonaws.com/bagisi/christopher_martin_cheaters_prayer_video.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d573431-ad50-4966-8774-3b666c9461e7/36291208884.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/mexevidoleriwozixo.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/stihl_fs_280_brush_cutter_prices.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d151050-ed4b-46b5-a439-94cff1f18cf0/how_is_paid_leave_calculated.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2571cf8f-577d-4187-b20c-51b051336b74/what_is_it_called_when_you_cant_concentrate_on_one_thing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8edc311-2264-4975-a92c-52a92771ae55/97594446397.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_off0000ff7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF7D 5468 bytes
SHA-256: 341619b352abce316e3b4b392265de6be0c678e1f84ecfc68cdfb07252b855b8
font_01_sfnt_off000111fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111FA 11628 bytes
SHA-256: 3acab6c771191683bf36ee464e6dee69cb0a952a479d7d86a6feeee2b041b957
font_02_sfnt_off00013943.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13943 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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