Malicious PDF — malware analysis report

Static analysis result for SHA-256 2380472e7e3c5765…

MALICIOUS

PDF

83.5 KB Created: 2020-11-14 08:24:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: a26826f3b10b171d0efda99601087367 SHA-1: d7254bcd014ede965fa7711df87b1d37118f8629 SHA-256: 2380472e7e3c5765a68c0a8a1d9e12a5d4614611210ab845e666a89604570975
156 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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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://traffine.ru/123?utm_term=s6+camera+apk PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4451753/normal_5fa6f3e94082c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383475/normal_5fa1a9072d353.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408997/normal_5f9df8dbc882d.pdfIn PDF document text
    • https://lajogaful.weebly.com/uploads/1/3/4/4/134481829/nemaxenaz-lobono.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403689/normal_5f955479e6e99.pdfIn PDF document text
    • https://porelananov.weebly.com/uploads/1/3/0/7/130775759/pizazojaw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tetazino/puwirewuxafaziraterotobud.pdfIn PDF document text
    • https://s3.amazonaws.com/fedojigudaj/13312277741.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7df275be-898b-4de6-a8ff-77388379fbc7/47509459500.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/91095034578.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/29196810717.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3dab0f7-7975-4e2f-890a-3b7b2e1a85bc/kowidorepe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95074e5e-c4a6-4350-9e66-cb0f02f9bcf5/mofase.pdfIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/searsport_high_school_maine.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/menogumi.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/58472340514.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010adc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ADC 5188 bytes
SHA-256: 450c99b35b232a547cd1465ba2666d4a68fe5b71c6b6d81355f71de15e0641ae
font_01_sfnt_off00011c72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C72 10916 bytes
SHA-256: dfafa0b3632ace48ab6d5e7cb961f1aaad719a013ebeee4b27e6377edccf240e

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