Malicious PDF — malware analysis report

Static analysis result for SHA-256 30586f03e85775e6…

MALICIOUS

PDF

73.6 KB Created: 2021-04-09 21:06:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 1e347ecbea750ad9c70e5fd37cb01752 SHA-1: d6f31526a761360cb59a74865370fb8e1494c974 SHA-256: 30586f03e85775e6cddc305da2a3e00c2195eda1afddd3bb04bb3b610b652b3e
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • 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://midufefew.ru/strik?utm_term=catch+me+if+u+can+movie+download+dual+audio+480p PDF link annotation
    • https://cdn.sqhk.co/nadokikado/bidiiS0/67681898636.pdfIn PDF document text
    • https://cdn.sqhk.co/dibitarebizu/13bjdNJ/dapekalo.pdfIn PDF document text
    • https://cdn.sqhk.co/wodaximewule/kOhhgfk/zaradalakadetapekasenakus.pdfIn PDF document text
    • http://bunokegezodidur.iblogger.org/59694643028.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413346/normal_60629b8465ce6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379615/normal_606bea20da284.pdfIn PDF document text
    • https://cdn.sqhk.co/neruxojus/djRslEL/techcrunch_disrupt_nyc_2019.pdfIn PDF document text
    • http://vazaferexadamaf.22web.org/algorithm_and_data_structures_tutorial.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/3f27f9c7-7345-4686-a7c9-a36cf53ed803/2012_kenworth_t800_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/brachiocephalic_veins_are_formed_by.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/876ba60b-19ed-400d-9a15-d1887dd31ea1/33352659474.pdfIn PDF document text
    • http://gisaxuzarufol.epizy.com/candies_platform_boots.pdfIn PDF document text
    • http://wojodine.rf.gd/budget_and_financial_management.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/brief_history_of_buddhism.pdfIn PDF document text
    • http://zavedofidime.rf.gd/49436598036.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/60364304266.pdfIn PDF document text
    • http://bevunogigofijag.rf.gd/medicinal_plants_images_and_information.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b9d3b11-cf97-4a33-8aaa-9c406ea49d42/97160745152.pdfIn PDF document text
    • http://pavemamixazose.rf.gd/how_to_thread_brother.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa9486c6-01cc-4a78-a14d-54ef4ae6f131/safuwapiwutumesafejukoma.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f415633-94e0-41b7-ae6d-cb8a7ef3060e/what_does_tree_of_life_jewellery_meaning.pdfIn PDF document text
    • http://fusuxitizubuka.epizy.com/12512893296.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/tovujebug.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_off0000df24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF24 5604 bytes
SHA-256: 694d8d3ca026e839257225a432eefde1b5f9b2f83ec1988497294524750e2341
font_01_sfnt_off0000f231.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF231 11900 bytes
SHA-256: e79d88704b1ae2923daf7924140581cd32df9dd3e9007ce4e0b38e0a7e0a2f94

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