Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3e9f8bd3f53e637…

MALICIOUS

PDF

65.7 KB Created: 2020-11-24 06:00:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: ffe0130abc89dd399eea018d55068619 SHA-1: 1f6ca1cde2bc4c430aae00a1cf4e684152f753ee SHA-256: b3e9f8bd3f53e63786a5871bc55fa4a9359d5d11764afb1fc15c71f6b43ca096
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded links, with at least one pointing to known malicious redirector infrastructure. The presence of a link farm suggests an attempt to manipulate search engine results or distribute malicious content. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or malware distribution campaign.

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
  • 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/aws?utm_term=briton+ferry+fc+form In PDF document text
    • https://sazoxizifa.weebly.com/uploads/1/3/4/5/134505384/161cf1fc1341.pdfIn PDF document text
    • https://zavomafig.weebly.com/uploads/1/3/4/3/134356936/7294050.pdfIn PDF document text
    • https://pobezewimo.weebly.com/uploads/1/3/2/6/132681951/87841b.pdfIn PDF document text
    • https://julapaxukej.weebly.com/uploads/1/3/4/4/134492969/kapizinu-vugaral-totilikiveguf-ludow.pdfIn PDF document text
    • https://rirusiwox.weebly.com/uploads/1/3/4/2/134265342/b4e0b420b293f.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/c5c51d6d-81bc-45b0-b80b-f42f6564fbef/raxutolirev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8646d6de-1138-4a31-9f9c-df3810e0834d/xoxituzara.pdfIn PDF document text
    • https://s3.amazonaws.com/xefezesebusu/50186737735.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/suros_regime_ttk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ddd9d3c-01c0-4a12-9a1b-dcec93b2c1de/jevibuduvekivager.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41150dfe-f6d5-4a93-81b2-547250bc3249/1120_schedule_o.pdfIn PDF document text
    • https://s3.amazonaws.com/lovomijelun/chelsea_boots_plateformes_2976_en_cuir.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_off0000c8f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8F8 4756 bytes
SHA-256: 86e993d7fbe4033462cc450f3b0d460ee5a1741df58213551a57d36a0ce8d342
font_01_sfnt_off0000d923.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD923 9756 bytes
SHA-256: d812a8db16b23e525b87b66790b64e2ae920354b5ac18147a6dd8af568ca433f

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