Malicious PDF — malware analysis report

Static analysis result for SHA-256 f662267a2a13c276…

MALICIOUS

PDF

65.1 KB Created: 2020-11-14 12:17:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: fafccfface635e52a2acf64df3abdb94 SHA-1: 2476d79ffa47f11070845e71d88d0437ceb93f42 SHA-256: f662267a2a13c276903e687b596a9ed74fc105efb21d6cbf72448f51c0348691
222 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, routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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
  • 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://ggtraff.ru/strik?utm_term=pokemon+glazed+pokemon+movesets In PDF document text
    • https://kukezedom.weebly.com/uploads/1/3/4/6/134629177/buminafepureziduwek.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407986/normal_5f9d28da15458.pdfIn PDF document text
    • https://juxokiwi.weebly.com/uploads/1/3/4/5/134594748/4cf3f4b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413454/normal_5f98a73f198ba.pdfIn PDF document text
    • https://zagusopiv.weebly.com/uploads/1/3/4/2/134234894/83b951f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366973/normal_5f88bb421b113.pdfIn PDF document text
    • https://wekubuzebebam.weebly.com/uploads/1/3/0/7/130739705/c53b361c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388819/normal_5fa4bfeef3a48.pdfIn PDF document text
    • https://desemezek.weebly.com/uploads/1/3/4/4/134458593/fevubajudomunufet.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/vopadofugon/43409424615.pdfIn PDF document text
    • https://s3.amazonaws.com/buponuwebi/chain_chronicle_ep_2.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b4bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4BC 5360 bytes
SHA-256: 972344162d996e59354208e993bfab50899a369e9ef10d848d3ead6716c68bfe
font_01_sfnt_off0000c6f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6F9 3720 bytes
SHA-256: a7c194c348f4bc26aad06ae1fa1eadf76503a3aca856ff80314c3d87a816eea9
font_02_sfnt_off0000d259.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD259 10408 bytes
SHA-256: 6abebf38260d0f1a07e7e7a6576e0e8130f903ce948906c416e2d8a18b626cd2

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