Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cc7492e714771c1…

MALICIOUS

PDF

73.7 KB Created: 2021-04-30 01:06:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 9d6cfaad674bc1c91b3a203fcfde0445 SHA-1: 33b39a13d13826118defcaddfd1a9d02e8cf21e1 SHA-256: 2cc7492e714771c17056c2a95bb200f5b81ce4970789d9217092aa363c9d17aa
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9999

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
  • 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.
  • 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://nipisod.ru/strik?utm_term=whirlpool+quiet+partner+1+not+cleaning+top+rack PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408460/normal_5fd0af409389e.pdfIn PDF document text
    • http://tijukilebag.getenjoyment.net/how_much_does_it_cost_to_put_in_a_jetted_tub.pdfIn PDF document text
    • http://melofuwi.getenjoyment.net/datasheet_fail._com.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473056/normal_60010e609dc29.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fewunadupop/kifaberizusogiserul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21b9da0f-3eae-446d-8731-2ffa4a9309e4/what_is_the_value_of_a_2006_chevy_equinox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39738575-4cb2-409e-b6a4-3463d9400b4b/50840347954.pdfIn PDF document text
    • https://s3.amazonaws.com/wusone/tavisizeniganotew.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/22054098661.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c954f86a-e761-45d3-9875-d3fb6188d733/melomonoxoboxubolo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c7ea663-7da4-45fd-baa7-69103eeb40d2/build_my_life_passion_lyric_video.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/kosipivuwavonubiwekata.pdfIn PDF document text
    • https://6f4861c6-cdf0-4a5f-ba2d-f9c5e5bfbee6.filesusr.com/ugd/77941b_f4d5787f954442c39afe40dfba61285b.pdf?index=trueIn PDF document text
    • https://e40da922-b0e4-44be-9878-2d4898ccab21.filesusr.com/ugd/3a38e0_6114485cd69748759f126e75a7697093.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a17fd6e-85d6-4be2-a11e-7d1b857f4fb5/instructors_solutions_manual_to_thomas_calculus_14th_edition.pdfIn PDF document text
    • http://sajulugebimisu.myartsonline.com/convert_to_word_free_online_converter_without_email.pdfIn PDF document text
    • http://sakogabutal.onlinewebshop.net/cardiovascular_system_exam.pdfIn PDF document text
    • https://s3.amazonaws.com/jaxesabi/informativos_territoriales_castilla_la_mancha_tve.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e24d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE24D 5272 bytes
SHA-256: eea4a66f267d740f2b93f95e4c48442e1aa0d403af8945dccf69e3ebe3fb664c
font_01_sfnt_off0000f447.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF447 10780 bytes
SHA-256: 6af93bd459faedea6feda7b3b5a6f6c913b0471e16ef2959cf637db127053955

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