Malicious PDF — malware analysis report

Static analysis result for SHA-256 72868235361c9be8…

MALICIOUS

PDF

1.04 MB Created: 2021-03-26 06:46:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 53a72edc8699289d63463248cb37025f SHA-1: b156764c782da0990440b2ee859aa5a5a31893d5 SHA-256: 72868235361c9be85c1d05e86aa0f4d3bf01467c36d56f19302b3ee4e4481843
106 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a lure related to 'Imperialism in India webquest answers' and is flagged by ClamAV as a phishing trojan. It also contains an external URI and a redirector link pointing to 'resalured.ru', suggesting a phishing attempt to lure users to a malicious site. The document body is heavily obfuscated, but the presence of embedded URLs and the ClamAV detection strongly indicate a malicious phishing campaign.

Machine Learning

  • Nyx PDF Classifier clean score 0.0915

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://resalured.ru/wix?keyword=imperialism+in+india+webquest+answers PDF link annotation
    • https://cdn.sqhk.co/gituxogud/ieL8Byc/radiant_floor_heating.pdfIn PDF document text
    • https://cdn.sqhk.co/dagufiwus/gi67lhe/61796779862.pdfIn PDF document text
    • http://reduslim-officialsite.site/evolution_definition_science_sentencem4njt.pdfIn PDF document text
    • https://faloxumotib.weebly.com/uploads/1/3/4/6/134646793/5962432.pdfIn PDF document text
    • http://maddot.space/528719897426ddni.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414488/normal_6016205a8082c.pdfIn PDF document text
    • https://jajijonag.weebly.com/uploads/1/3/4/7/134762104/aa19ef90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371005/normal_603ad2da570dc.pdfIn PDF document text
    • http://excellent-spb.ru/quadratic_formula_worksheet9ihhw.pdfIn PDF document text
    • http://topstop.site/kusiwuwenadubugakcpx9p.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486984/normal_603407a4ae6a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489402/normal_601c5fa122c20.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421330/normal_5ff28197c875a.pdfIn PDF document text
    • https://tudupumodowi.weebly.com/uploads/1/3/1/4/131406798/7230877.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bc59959-2632-44ec-a7ec-5a8ce041ef16/calories_in_arbys_fish_sandwich_without_tartar_sauce.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24b276b9-3f53-4e47-86ed-2347a8ba03d3/47581267432.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/492178f4-0e7f-4946-bbb5-186eb2c74ece/zomogebefezagave.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e39de4f6-6ed1-4d59-a57b-fb269eb5d6b9/how_would_you_describe_most_of_the_plants_found_in_tropical_rainforests.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6b30fb5-54a6-4447-8ce7-7094251fd00b/how_to_defrost_samsung_bottom_freezer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e49018c4-490d-4c0b-83c7-58d1d3bcbb83/40844452554.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/718e2e7f-d723-48b8-8c87-455024a2609a/become_better_at_synonym.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0010608b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10608B 5400 bytes
SHA-256: bc9eabe7b7456d3776830f41ee791cea7f446666a320f8b3678300195fdb65cf
font_01_sfnt_off001072db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1072DB 10752 bytes
SHA-256: 588e7db94c33fc79f05a80043a81d39bed12b2ba0eb3b8e051b6ddd71e6ddc82

Open this report in the interactive analyzer, or submit your own file for analysis.