Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d311c9c4fccdd6b…

MALICIOUS

PDF

77.3 KB Created: 2020-11-28 01:15:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d1f5670ffac18ea62fe8439efa925973 SHA-1: 1794f65a12ee63d764dc26c74f36f6ab12099666 SHA-256: 8d311c9c4fccdd6baee92f908c9cb509cb278104ca91148ce68f230e330efa39
214 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 and routes users through malicious redirector infrastructure. 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/123?utm_term=ecg+workout+jane+huff+pdf In PDF document text
    • https://jilukixewe.weebly.com/uploads/1/3/4/0/134042659/582707.pdfIn PDF document text
    • https://luvepuxoworusoj.weebly.com/uploads/1/3/4/6/134660421/kodinukiwekijobafis.pdfIn PDF document text
    • https://jowamevo.weebly.com/uploads/1/3/4/5/134511132/logikigidofo.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/fbb82c22-047d-4ef1-bb13-5aac63a1f4ae/sundari_kannal_oru_sethi_song_free_d.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af7cca61-412e-43ec-9295-f1f2680dd6f0/naxolawofujorufedobutupuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0929b13-a9e1-409c-87db-7b995c13db31/rampage_full_movie_online_free_123mo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/514e9c03-a64b-443f-b6a7-49cd210d8a98/votonisuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f304c729-b639-441a-bec2-a1084924f372/nekij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ebc551a-3aef-4702-b3ed-aa9d3b3cef8a/practical_management_science_5th_edi.pdfIn PDF document text
    • https://s3.amazonaws.com/jenagubadopi/discovering_french_blanc_answer_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ac17231-8192-427b-a000-dcb07cdff79f/the_surge_irina.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8dd0b59c-7909-4951-a4d4-3a9dc689cab1/87679314402.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aaca70e6-b5a8-4c51-8d41-959272e40837/77107248319.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/310a4538-11c8-4db4-92b9-d79a28e28034/mawimepurenakabarif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66b55dbb-c19c-4431-a1b0-06a9e80cd580/84981229976.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD7C 3696 bytes
SHA-256: 04db798ea2611e930c5cfc0cc063374849ef948fab2e1de73be953ad56514656
font_01_sfnt_off0000dab6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAB6 5396 bytes
SHA-256: e0c218d8d71ac24392fa844a6eded1b4ccf0cb845ef99cfcceae9101e8349f22
font_02_sfnt_off0000ed33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED33 11220 bytes
SHA-256: b69c8ccaeeec9a652a2305cb51a0daa7b068f321e04c6ecf6723270acbbbe963
font_03_sfnt_off0001128e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1128E 16164 bytes
SHA-256: 0ddbdf075a6b93c30840c956f82c28930afd570615945c5f10d387cf6e2c8926

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