Malicious PDF — malware analysis report

Static analysis result for SHA-256 469e6ac59406e798…

MALICIOUS

PDF

84.4 KB Created: 2021-04-01 22:45:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dff8c07174126d92f17759404bd3d1fb SHA-1: ee2227863d35413c511f41fe974f4f5f5ae17f72 SHA-256: 469e6ac59406e79894855011f71e83382fa2a87ebf2fef16f2d0351887c34f75
214 Risk Score

Malware Insights

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

This PDF document contains numerous embedded links, with at least one identified as a malicious redirector. The primary malicious URL is https://yafferge.ru/award?keyword=selected+short+stories+edgar+allan+poe+pdf, which likely leads to a phishing or malware distribution site. The document's structure and the presence of many external links suggest a link farm or phishing attempt disguised as a collection of stories.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://yafferge.ru/award?keyword=selected+short+stories+edgar+allan+poe+pdf
    • https://sudororurupe.weebly.com/uploads/1/3/4/6/134602833/tokifajes.pdf
    • https://cdn-cms.f-static.net/uploads/4412757/normal_602476120c8a4.pdf
    • https://bowalizixoled.weebly.com/uploads/1/3/1/8/131872289/moxiwanedom.pdf
    • https://cdn-cms.f-static.net/uploads/4495837/normal_60354dd9aa817.pdf
    • https://cdn-cms.f-static.net/uploads/4451220/normal_605c62a1ea29f.pdf
    • https://dobojadu.weebly.com/uploads/1/3/2/7/132711966/bugirezu-vanurusaje.pdf
    • https://static.s123-cdn-static.com/uploads/4374979/normal_5febf43def06e.pdf
    • https://static.s123-cdn-static.com/uploads/4455916/normal_600601d706c1c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/18afe764-910e-4a8d-981e-37e780cd8b80/how_to_restore_an_ipod_nano_with_itunes.pdf
    • http://bojakufuxelev.epizy.com/the_secret_life_of_pets_2_larry.pdf
    • https://uploads.strikinglycdn.com/files/e49bee41-f844-4a07-8d97-5bde2af47a03/how_do_we_put_on_the_full_armour_of_god.pdf
    • http://wupejubofuvom.rf.gd/budget_2020_19_mauritius.pdf
    • https://uploads.strikinglycdn.com/files/de2f957e-8668-4fb2-aa01-94adf707567f/62025396739.pdf
    • http://badokelo.rf.gd/38735559728.pdf
    • http://fepobidim.rf.gd/what_is_the_definition_of_secular_humanism.pdf
    • http://sirevonigira.epizy.com/sokazuninixiw.pdf
    • http://wobudesupak.epizy.com/i_like_me_better_piano_sheet.pdf
    • https://uploads.strikinglycdn.com/files/407e86b1-e00c-4c6a-8ce3-07ac3598d382/wovufawoz.pdf
    • https://uploads.strikinglycdn.com/files/2e4b65ca-5e63-4f30-9807-bcb1e11b9ffd/champion_4000_watt_generator_reviews.pdf
    • https://uploads.strikinglycdn.com/files/ce5f2860-c18a-4fe5-8667-c068e95ad245/2019_form_1065_schedule_m-3_instructions.pdf
    • https://uploads.strikinglycdn.com/files/aae90288-c207-4023-8b21-c7fc43dbb176/vujarorevowog.pdf
    • https://uploads.strikinglycdn.com/files/7e3dd66d-a286-43d5-9aa1-97c129de9d3b/nessun_dorma_opera_testo.pdf
    • https://uploads.strikinglycdn.com/files/26ef43f1-c784-45d9-892f-f0042afda6a8/gesorirotawitatemaxa.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010969.bin
302a006cdaf58b0223d26c46a23a1b90a6610d9f7e608b42fdcca9465b601153		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10969 5520 bytes
font_01_sfnt_off00011c28.bin
369fb463c3760bef6bcd16bd79bcb57b2c5fd36cbbbb96d505cd2154fae37647		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11C28 11140 bytes

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