Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc41f7a70dc445e7…

MALICIOUS

PDF

93.6 KB Created: 2021-04-08 01:08:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d3e95fd13df64a7c64a79ffdc4389d50 SHA-1: 76d3d76e9fc1b9c3b84b4c21df025097f0cc40b9 SHA-256: dc41f7a70dc445e712089287a36dcf77e9c5ba9b1f2bc5cded9aeeed45f81cc2
186 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. Heuristics reveal it functions as a link farm with numerous external URLs pointing to disposable domains, suggesting a phishing or SEO spam campaign. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=photoshop+pdf+books+sinhala PDF link annotation
    • https://rogexufinijofe.weebly.com/uploads/1/3/1/1/131164439/f7f41e2d.pdfIn PDF document text
    • http://hellesypakk.online/15249868893pvvl3.pdfIn PDF document text
    • http://item-get.top/dirt_devil_power_max_xl_beltnldnc.pdfIn PDF document text
    • https://bugevokugado.weebly.com/uploads/1/3/4/8/134870551/7231668.pdfIn PDF document text
    • https://kololeranazi.weebly.com/uploads/1/3/4/5/134583506/8989833.pdfIn PDF document text
    • http://cybety.xyz/774986713814e304.pdfIn PDF document text
    • http://kemytbok.xyz/53473173513bqwni.pdfIn PDF document text
    • https://watuxiso.weebly.com/uploads/1/3/2/7/132740831/1735747.pdfIn PDF document text
    • http://hamsterbig.com/zodosinoxba870.pdfIn PDF document text
    • https://gawufuxawejax.weebly.com/uploads/1/3/1/8/131855981/goloxeraxe-nuduv-wamofus.pdfIn PDF document text
    • http://7lessons.space/spanning_tree_protocol_process_steps5133y.pdfIn PDF document text
    • https://duverovimuvojap.weebly.com/uploads/1/3/4/1/134131352/7154058.pdfIn PDF document text
    • http://justiciaforjustice.com/guxudofabalimefoxawuketz0sfv.pdfIn PDF document text
    • https://fevobubutexub.weebly.com/uploads/1/3/4/4/134481878/todawomiwes.pdfIn PDF document text
    • http://9gusevshop.space/su_color_favorito_era_amarillo61gn1.pdfIn PDF document text
    • http://freshmind.net/crossover_2006_movie_downloadchdvo.pdfIn PDF document text
    • http://copyright-help-report.com/fibamuliw3qvnj.pdfIn PDF document text
    • https://rawonosegapit.weebly.com/uploads/1/3/5/3/135314608/keweva.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://uploads.strikinglycdn.com/files/1fe1e883-2e61-46d8-8fae-839b2162971f/why_wont_my_microwave_fan_turn_off.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9da55084-86d5-40dc-adde-88a57a312a6a/2370135867.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11586334-7267-489c-bd57-fe19faabeb65/what_is_the_use_of_reference_voltage_in_adc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e67d6d9-a543-4908-87d5-61306151a97b/jusabivutopagu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c06b4658-7820-42b3-9279-f9a285cb0ff2/xojorosujimogeji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcebe4bd-0f3b-4838-aa89-b99302f10a08/schwinn_sidewinder_2.6_fs_purple.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef39f7a0-6c09-4159-b883-19dc63156189/speed_queen_stackable_washer_and_dryer_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e786d7c-5318-42dc-b273-458d2ea53efb/what_does_academy_mean_in_greek.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_off00012520.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12520 4908 bytes
SHA-256: 10d7f861ba5aacd978754e1c580d772e535d3ea06476e31112d32ded20acf0ed
font_01_sfnt_off000135b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135B3 10812 bytes
SHA-256: c03800af87b9efad91cf842f174dfd5d724bf4711a8f11c790ab4cd2c7363041
font_02_sfnt_off00015a7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15A7C 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c