Malicious PDF — malware analysis report

Static analysis result for SHA-256 d069cd5e9f117479…

MALICIOUS

PDF

76.0 KB Created: 2021-04-04 09:48:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 1ff5f84f062d8572fe71f65285feaf88 SHA-1: 71f15200ff7286eb4f2da694d6582da853c74d08 SHA-256: d069cd5e9f117479abbbbf63e2bd912bbba4a16119864a83ee93ef44f91cc71c
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 0.9996

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
  • 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/123?utm_term=songs+in+telugu+videos PDF link annotation
    • http://doucheapp.xyz/chess_tactics_for_beginners_2.07golv.pdfIn PDF document text
    • http://mosuxuvemuzuwex.mywebcommunity.org/8-1_skills_practice_geometric_mean_answers.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450631/normal_5fd95bc46cd1b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390069/normal_604ad67410043.pdfIn PDF document text
    • http://lovelyhouse.online/xitofurenilikimulr6l2z.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379961/normal_604472fdf0ea6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453885/normal_5fd807a0952c4.pdfIn PDF document text
    • http://micrometerdigital.xyz/is_star_citizen_available_on_xbox7dysu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376621/normal_5fef13f514ce0.pdfIn PDF document text
    • http://zesamoa.online/best_studded_tires_consumer_reportsglk55.pdfIn PDF document text
    • https://badukixekuxa.weebly.com/uploads/1/3/5/3/135388400/dijojalaruw-pijebixajij.pdfIn PDF document text
    • http://cocobuka3.xyz/384899923181du26.pdfIn PDF document text
    • https://fitatopiwize.weebly.com/uploads/1/3/0/7/130739398/geseduzozi.pdfIn PDF document text
    • https://davufafelasipip.weebly.com/uploads/1/3/4/3/134328138/537b779e87af40.pdfIn PDF document text
    • https://fixubosadad.weebly.com/uploads/1/3/4/6/134658154/runawi.pdfIn PDF document text
    • http://nubatevujonuw.mygamesonline.org/textbook_of_biochemistry_by_satyanarayana_free_download.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/1a86c1c8-26f0-4751-bdb4-e759fea1b7c3/xetijososuf.pdfIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/bigisexawudevawenag.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/adobe_acrobat_pro_x_suite_v1._x.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b72a3323-f707-44f7-a570-10a70346b113/dometic_rm1350_not_cooling_on_electric.pdfIn PDF document text
    • https://s3.amazonaws.com/galinikagopit/tijiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a225a3b-a189-4cd8-9677-56b6d3332c18/bosch_nexxt_500_series_washer_error_code_e01.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_off0000eb10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB10 4848 bytes
SHA-256: baac5dad5c5e258321663795600ddf7ed3ea03d01dc61b5ea88f9bfa7c03428c
font_01_sfnt_off0000fbaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBAA 11648 bytes
SHA-256: f08a80ddea8202aa31407e05f7c89a918fdcfd7857685c80e14da9f4a6a6ff70

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