Malicious PDF — malware analysis report

Static analysis result for SHA-256 b958f3fafafa82e7…

MALICIOUS

PDF

82.6 KB Created: 2021-04-07 00:04:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 62432c20a8dda0c6f6ae87f449ad05e4 SHA-1: fff7c98d6d846c76730b6002a27699d68dfd1ed2 SHA-256: b958f3fafafa82e7210b18dc05c0615b9d8f7070fab12e4365b7fcd379e334de
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that redirects to a suspicious domain, likely intended to host a phishing page or download further malware. The document body, though heavily obfuscated, appears to be a lure related to vacuum cleaner reviews.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/strik?utm_term=shark+navigator+lift-away+dlx+vacuum+cleaner+reviews PDF link annotation
    • https://sudikefasegez.weebly.com/uploads/1/3/1/0/131070357/waponabowiga.pdfIn PDF document text
    • http://titoto.xyz/rulebija6bivv.pdfIn PDF document text
    • https://vesasasafej.weebly.com/uploads/1/3/4/7/134758359/ffbc3a072ec9.pdfIn PDF document text
    • http://osthondroz.com/make_own_name_ringtonegg26i.pdfIn PDF document text
    • http://doucheop.xyz/how_do_you_reset_an_outdoor_sensor_lightztflf.pdfIn PDF document text
    • http://firstsecu-paypal.com/705047702277yp8k.pdfIn PDF document text
    • https://mikezopa.weebly.com/uploads/1/3/4/3/134366842/dibuwelitufavegemiw.pdfIn PDF document text
    • https://felelitujafi.weebly.com/uploads/1/3/5/3/135392562/d4593682e.pdfIn PDF document text
    • https://zokuvulasaxibu.weebly.com/uploads/1/3/5/2/135298812/wimebikexuba.pdfIn PDF document text
    • http://dom-bita.org/crazy_kickball_variations4duwf.pdfIn PDF document text
    • http://maturibcgj.space/heli-sep_oil_water_separator_manual1yspb.pdfIn PDF document text
    • http://fb-pageunderreview.com/fogatamefipnd5d2.pdfIn PDF document text
    • http://instgramcopyrightdispute.com/tai_chi_teaching_videoev1zo.pdfIn PDF document text
    • http://cethq.xyz/8760585489427mcj.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/gavexilatuvitaz/arabic_geometric_pattern_and_design.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/lonobogejevojovexebu.pdfIn PDF document text
    • https://s3.amazonaws.com/papuja/is_canon_mx922_compatible_with_chromebook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/579ac29b-9957-45f9-b921-84df20c5d796/begejex.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/zedozivasa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b474fb7-aaa5-472b-93b2-13baddfacfd5/why_is_it_called_alligator_river.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/tilidojapizalosozi.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/algebra_2_chapter_2_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bcd6761-f1b8-4d80-a7a5-7d8afc18129b/best_way_to_quit_smoking_free.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/save_smaller_file_size_mac.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_off0000f55a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF55A 5836 bytes
SHA-256: 93ba3269f1b91d711b80e3826ae36e0c64dfdd957bdf4beb47917b75239ce904
font_01_sfnt_off00010922.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10922 10748 bytes
SHA-256: efb19dade4ab6fce46747108a952dd113137e64037750088f12ba7fa0cf6f5d2
font_02_sfnt_off00012ddf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DDF 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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