Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7f3ae8dd7b317f1…

MALICIOUS

PDF

88.6 KB Created: 2021-03-17 19:36:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9137392c907d17f6b5a8c0709aa49d92 SHA-1: b29c8fbeb3692a117ca9fa899e540b37bf3e67b7 SHA-256: c7f3ae8dd7b317f151c5c37568854bf923dc565429adb84deed178de569dbafc
136 Risk Score

Malware Insights

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

The PDF file contains a lure related to English verbs, but the embedded link redirects to a malicious URL, indicating a phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to deliver a secondary payload or phish credentials. No scripts were extracted, but the PDF structure and external URL are indicative of a common phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://nipisod.ru/strik?utm_term=lista+de+verbos+en+ingles+pdf+presente+simple PDF link annotation
    • https://s3.amazonaws.com/fodose/sonos_1001_error_code.pdfIn PDF document text
    • http://maykistore.ru/vodobolorazakujep016wp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473916/normal_603cee63b1453.pdfIn PDF document text
    • http://de-bewertung-id2842384.icu/113428896141jm1p.pdfIn PDF document text
    • http://firavowinoza.iblogger.org/bittorrent_free_for_windows_32_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/jefazaxal/dunezejusakavudis.pdfIn PDF document text
    • http://you-bestshop.xyz/tomazopitu2uh7q.pdfIn PDF document text
    • http://1xbets-regs.site/polerusez3i23s.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/bear_scout_leader_guide_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/how_do_i_form_an_llc_in_louisiana_for_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375541/normal_5feb3fe31571c.pdfIn PDF document text
    • https://s3.amazonaws.com/sewamos/how_to_use_battery_tender_4.5_amp.pdfIn PDF document text
    • https://s3.amazonaws.com/rewepalazamiso/lotus_caravans_tremor_for_sale.pdfIn PDF document text
    • http://erogan-encolumbia.site/76046964449vt855.pdfIn PDF document text
    • http://help-verifiedbadgecenter.com/aveyond_ahriman_s_prophecyx6a33.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
    • http://xubibufopude.epizy.com/79376930066.pdfIn PDF document text
    • http://xodolipifonabo.epizy.com/calendario_epidemiologico_2018_peru.pdfIn PDF document text
    • http://fizojigijuzad.epizy.com/kilemoledepona.pdfIn PDF document text
    • http://gipenebome.epizy.com/icd_10_code_for_history_of_compression_fracture_lumbar_spine.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f724.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF724 5288 bytes
SHA-256: 3817eb13d8bad1b06957db155e8a626e4421c9ca841f5a93f6b94032ef23c0fa
font_01_sfnt_off00010903.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10903 11672 bytes
SHA-256: 40953483ecca843f9d6bc80c60e3454f1257f322a84113e63a45f30729904a52
font_02_sfnt_off00012f48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F48 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd
font_03_sfnt_off00014475.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14475 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378