Malicious PDF — malware analysis report

Static analysis result for SHA-256 b775643fed0b5f4c…

MALICIOUS

PDF

71.8 KB Created: 2021-05-09 19:29:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 5f3fc0d7186bd49b32b98f1387acbbd3 SHA-1: ddd66e2b0023d91f05eb8ccb30d7f47ae5c48cc1 SHA-256: b775643fed0b5f4c8b718b5f9174c5ecbbbbe7c5e4837a706e46039adf8590e6
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 0.9996

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
  • 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://ponafet.ru/strik?utm_term=the+anatomy+of+story+22+steps+to+becoming+a+master+storyteller+by+john+truby PDF link annotation
    • http://goods-amzon.com/85202015517jkrdl.pdfIn PDF document text
    • http://flowerport.store/juzadajusujogok.pdfIn PDF document text
    • https://simejozegedofu.weebly.com/uploads/1/3/4/3/134359486/jixanomesi-bewokizewiwax.pdfIn PDF document text
    • http://urolog.xyz/kezurozisujopaporuje7f87x.pdfIn PDF document text
    • http://makeyourself.xyz/26714699143waz4x.pdfIn PDF document text
    • http://cadenalia.com/142833020012gocg.pdfIn PDF document text
    • http://ru-dev.xyz/fuvabejirag3tmg4.pdfIn PDF document text
    • https://jegetujo.weebly.com/uploads/1/3/5/3/135300600/4363418.pdfIn PDF document text
    • https://rijijuxika.weebly.com/uploads/1/3/5/3/135346754/5013635.pdfIn PDF document text
    • http://de-bewertung-889562.icu/mubapuxomuwakufonugxsfjs.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/e4a2a196-3728-4b6d-bcc7-b373d2559a54/briggs_and_stratton_550_series_pressure_washer_oil_type.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa2e6b34-74ea-4276-81e7-4938812cb75f/mafibevimubamavezomovuse.pdfIn PDF document text
    • https://247e77cc-5367-4382-8586-7c5891409f42.filesusr.com/ugd/2dbf5a_b9627b6eced645a69f538639fb8b9f5f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/78b7b13b-9af6-4158-9928-2cf11d57b20f/18451464711.pdfIn PDF document text
    • https://s3.amazonaws.com/lolaritemukole/kudejujegu.pdfIn PDF document text
    • https://486a928f-df87-4682-b39c-9199637d78f9.filesusr.com/ugd/982a49_25bd71cef3c04f92ac306c6fbf78a83a.pdf?index=trueIn PDF document text
    • https://0ea28b16-58c2-472d-b6be-3e97fe9b7bb6.filesusr.com/ugd/696b8a_1def0204c2fc4b2f8d910dbee878fb87.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wewiro/unicorn_coloring_sheet_printable.pdfIn PDF document text
    • https://a519209a-2b0a-481f-9fe9-460c873bdc80.filesusr.com/ugd/270e53_cde00cad025e4c439300dfb86ed8be64.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/luworizesupox/formation_chaud_froid_climatisation_en_tunisie.pdfIn PDF document text
    • https://s3.amazonaws.com/datarofapakil/sajebutidunodikukam.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_off0000d80d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD80D 5828 bytes
SHA-256: ae64273a06687a91d6a1baecce3427cd7194f5f12ffeea5883b295ec2696811c
font_01_sfnt_off0000ebcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBCD 11016 bytes
SHA-256: e015b83c63b3aaccb4595b109d31b3ef7de0867b148d0cddfc3520b495129ff9

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