Malicious PDF — malware analysis report

Static analysis result for SHA-256 fea264541b922bd5…

MALICIOUS

PDF

80.0 KB Created: 2021-05-06 01:44:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 73b8751c6b73dba4aac9aebbdf5f93c2 SHA-1: 84eea843b63081a280484f015c00cda0a03c5e1a SHA-256: fea264541b922bd57170a997b3265d1eb1ae3cedb6f0e6a739a288390598b867
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 0.9998

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://xajibur.ru/strik?utm_term=conair+beard+trimmer+replacement+blades PDF link annotation
    • http://zirirukefup.22web.org/95811364264.pdfIn PDF document text
    • https://cdn.sqhk.co/wadelovelo/ggTu8ja/real_car_driving_simulator_2018_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/zifeduwa/eicf9vO/gixokefuperawemozix.pdfIn PDF document text
    • https://cdn.sqhk.co/lasesekov/3hcigEG/xowibusafeveduzinozalupo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://vavarogusofu.epizy.com/92402599559.pdfIn PDF document text
    • https://e0ff2378-281a-4ea3-95ae-419c526fdc99.filesusr.com/ugd/0baf77_daccd461b5054d3cb5517e096eb0c8fc.pdf?index=trueIn PDF document text
    • https://926da24b-d3df-4aea-ac1b-ebdf7359a9e7.filesusr.com/ugd/fef925_bad3d9861c964ad8827d3a7f344162fb.pdf?index=trueIn PDF document text
    • https://ccd4a2e6-63e2-4dcb-a02e-1ae1253dabcc.filesusr.com/ugd/059ff1_88d4851ccd634cd39bca8da0edc697c9.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1dc1353-836f-43c9-89b9-36fe9044b6ff/71763879686.pdfIn PDF document text
    • https://s3.amazonaws.com/fidobakipivogit/wejemarabarozozame.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/lirobupinatifadefanexuwaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5518517a-ea25-4ce1-8713-ce97f91f0044/circuit_analysis_questions_and_answers.pdfIn PDF document text
    • https://1c437d0a-cccb-4a8a-93f1-39e0b5126915.filesusr.com/ugd/b91566_3725b93e8148433aaf0c8d48d6b0f455.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xukirizugukugi/69328824924.pdfIn PDF document text
    • https://s3.amazonaws.com/dudigonifu/nostalgia_popcorn_maker_walmart.pdfIn PDF document text
    • https://62abf401-5fc9-4991-ac00-cb6a0c8cf8ec.filesusr.com/ugd/e4ff69_31211f8c3045453c9f52ea3fc5a46292.pdf?index=trueIn PDF document text
    • http://famifel.rf.gd/hanuman_ji_ki_aarti_download.pdfIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/latest_john_grisham_books_in_order.pdfIn PDF document text
    • https://c2bc7a71-cb21-434c-84f6-8d2fc09ed56d.filesusr.com/ugd/03ae60_88d0eafc13e5435994df3b86a0b3e0c1.pdf?index=trueIn PDF document text
    • https://c5c1e25b-3ca9-4f8f-aecb-0ee3b29cb37b.filesusr.com/ugd/f4fe7b_65a663fb4fbc43e7b8e33ad90cdf8ddf.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF1D 5168 bytes
SHA-256: a1220e93cdf359df17be075abd3b4fe4589033e9378a5209865fc0e5c3bacf98
font_01_sfnt_off00010089.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10089 10596 bytes
SHA-256: f954963e5b04629922d930143178d7c42ced8c80c9f5536711d1f01d27274d72
font_02_sfnt_off0001247d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1247D 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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