Malicious PDF — malware analysis report

Static analysis result for SHA-256 46d4ccdf8bba2b5c…

MALICIOUS

PDF

87.1 KB Created: 2021-03-28 18:55:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 44b39fadbf19c2b0ec9d69d08651db26 SHA-1: aee8407a6144354af69a41bfdfbf13d21c79c65c SHA-256: 46d4ccdf8bba2b5c55ba37a10667080b9c149c9f0f0b8536990833c869670615
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 0.9993

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 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://dafemum.ru/award?keyword=penguin+reader+beginner+pdf PDF link annotation
    • https://cdn.sqhk.co/tadeketoxab/xbV0jfU/ghost_rider_cast_rebel_wilson.pdfIn PDF document text
    • https://cdn.sqhk.co/xesozugis/ehbF3fD/english_romantic_ringtone_2019_download.pdfIn PDF document text
    • http://justiciaforjustice.com/list_of_nanda_nursing_diagnosis_2018aao6w.pdfIn PDF document text
    • http://kosolibanun.iblogger.org/51962984194.pdfIn PDF document text
    • http://specrazreshenie.com/lords_mobile_guild_fest_quests_guidey3gom.pdfIn PDF document text
    • http://uniques.space/meaning_of_budget_line2l9h6.pdfIn PDF document text
    • http://select-get.top/391913179vv5nw.pdfIn PDF document text
    • http://goodsfor.life/dunupefev0awqw.pdfIn PDF document text
    • http://alternativeinfluencenetwork.net/33138897180u0z80.pdfIn PDF document text
    • http://ita-fitness.fun/92434827100az2is.pdfIn PDF document text
    • https://cdn.sqhk.co/totimujid/mWhbphc/67317173259.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nogogesusuwebob.epizy.com/82313661668.pdfIn PDF document text
    • http://welididoseburiv.epizy.com/33743094301.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/943da4de-d3fb-4d5b-b967-a7baed7d5731/loviruzutut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6252cfcb-e417-4dc9-a70b-26bcbdd43c0a/23225279239.pdfIn PDF document text
    • https://s3.amazonaws.com/bagisi/49400510673.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cba6a412-804f-42a6-b4f3-2e6adda4e92a/sozumutazufakobuwituboka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4951a226-1e4f-47cd-871b-b11135fb6382/gurodupubigore.pdfIn PDF document text
    • https://s3.amazonaws.com/jajoxulabojaso/juki_ddl-5550-6_price.pdfIn PDF document text
    • http://kogejikez.epizy.com/chick_fil_a_menu_nutrition_info.pdfIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/how_to_pump_up_tire_with_presta_valve.pdfIn PDF document text
    • http://jasilowesuvus.rf.gd/5499583610.pdfIn PDF document text
    • https://s3.amazonaws.com/nawuvud/75447186334.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_off0001074a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1074A 5140 bytes
SHA-256: 278338e9eef19809770ea22457e0aab42dc796f5a59f3f0a1ccfafdbbf8ffdc3
font_01_sfnt_off000118d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118D0 16992 bytes
SHA-256: 9d41037f69aa3c9e4c51e47f3ad13752068af582bfacd95cf58f7b45de6c315b

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