Malicious PDF — malware analysis report

Static analysis result for SHA-256 e08d8c20f820eaa6…

MALICIOUS

PDF

88.2 KB Created: 2021-03-28 01:23:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 2971bfb6fb442057682ed174b76ca6f6 SHA-1: a5193cac824f9125051c612a94224a5d6e0ca880 SHA-256: e08d8c20f820eaa64fbc23f73a8257862a40318d88b5efcb4c6af9d716fda7bd
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, many pointing to disposable hosting, and is flagged as a link farm. The primary URL suggests a lure for a game hack, likely to redirect users to malicious content or phishing sites. ClamAV detection and ML classification strongly indicate malicious intent, consistent with a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 7

  • 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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=8+ball+pool+hack+online+generator+without+human+verification PDF link annotation
    • http://veselutut.mywebcommunity.org/20328831089.pdfIn PDF document text
    • http://xavesavegi.22web.org/craniotomy_instruments.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/1d0cb923-9769-4408-8c52-a3093ba2e81f/24647438125.pdfIn PDF document text
    • http://lobopekogolo.onlinewebshop.net/wujibu.pdfIn PDF document text
    • http://sibubixusa.epizy.com/biodiversit_urbaine.pdfIn PDF document text
    • http://laxuzoto.onlinewebshop.net/63354376032.pdfIn PDF document text
    • http://gamebunamol.rf.gd/53969105502.pdfIn PDF document text
    • http://vujapoguxesak.myartsonline.com/92829048417.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/747de771-2e01-4590-90fb-0359ba999275/tarzan_the_ape_man_1981_full_movie_youtube.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cf0a383-270b-4c56-a317-9b65ea3b3200/2770035200.pdfIn PDF document text
    • https://1ba6f066-89d4-4445-b8a9-08a6de046ef2.filesusr.com/ugd/d40554_97d945f02c46469b967368f97b110577.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/30f922c2-ad75-495c-bfa0-8ba721f287dc/pavorafuzorelidorasusa.pdfIn PDF document text
    • https://5fb42ee6-a9be-400a-98f2-f9d4b9f720c8.filesusr.com/ugd/1813b3_176fffd8d05f4889a6daf34123bf39e8.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/42338bdc-fd63-4253-b2a2-717236e34f6c/50989939848.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3854209-3435-4ee2-8407-b534be13c0ed/47871387530.pdfIn PDF document text
    • http://wemaxoseni.myartsonline.com/disaster_management_atul_prakashan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bef85e9b-83cb-4d23-b184-f451394df9cc/57312718133.pdfIn PDF document text
    • https://80c93ba6-74df-4afb-9852-3a83eaba20e3.filesusr.com/ugd/4cf28d_4b01ef2214f44240b454efa276b523f1.pdf?index=trueIn PDF document text
    • https://d2f6477b-62ad-4b86-bde8-abf481119435.filesusr.com/ugd/6f7357_3b2c8ae40bfe4c13ae68624cbd9b1daa.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6e946ec-90f4-4cb9-bb46-7e8307d57379/8898606232.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97e2a125-68e0-4427-8c82-f5a575a81e47/maze_runner_character_thomas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/370f1de0-ac47-4cb5-99a3-774690303806/how_many_hotels_come_in_monopoly.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000109b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109B7 5704 bytes
SHA-256: cf882582017dd11533789713d0aaa1bdc59f3889c8bf2d05f71eb090ee714f00
font_01_sfnt_off00011d09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D09 2092 bytes
SHA-256: 0f740872c9ba99ba2808e86ca1aa710947acf25eef927d3004a187dd3557d740
font_02_sfnt_off000126af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126AF 13120 bytes
SHA-256: 48a6ef2c36709757412f363472ab35f486b0c9e7e4d18448426c59d0197725db

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