Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cd5fc078f2bd240…

MALICIOUS

PDF

77.3 KB Created: 2021-04-05 17:42:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 351817d7d4e125a290f1dcbbf6ba08cb SHA-1: d760de89f01505023e9ee5b3365032c7275f4162 SHA-256: 6cd5fc078f2bd240c21b501a1c8ca7739ce7be869b6461ad6a9a0f01702454fb
186 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 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
  • 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.
  • 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://soxebez.ru/wix?keyword=star+wars+shadow+guard+helmet PDF link annotation
    • http://rewaxowaf.22web.org/41342238041.pdfIn PDF document text
    • https://xeromikivato.weebly.com/uploads/1/3/2/6/132695960/012539c26d70f23.pdfIn PDF document text
    • https://pixumoxijabana.weebly.com/uploads/1/3/4/7/134748481/8982153.pdfIn PDF document text
    • https://wawumojobov.weebly.com/uploads/1/3/5/3/135323155/a291833433e509.pdfIn PDF document text
    • https://jasugupaxawuz.weebly.com/uploads/1/3/0/7/130740610/7bdde0bdb092198.pdfIn PDF document text
    • https://xuxukiworizep.weebly.com/uploads/1/3/4/7/134723333/59e30c.pdfIn PDF document text
    • https://zutafemaz.weebly.com/uploads/1/3/4/4/134478566/kemilofijupuruvoba.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gurutimikef.epizy.com/goat_simulator_free_download_for_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c100dd9-082c-426e-afb6-499a1e51540b/super_smash_bros_ultimate_easy_piano_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a456c7f2-feb3-4975-bf18-8c817e6a0c7f/madame_guyon_prayer.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/wokifegik.pdfIn PDF document text
    • http://zepikuxan.epizy.com/28274900554.pdfIn PDF document text
    • https://s3.amazonaws.com/dexodekelaseki/50032612794.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/vimadasovidelagugu.pdfIn PDF document text
    • http://bikikifuxax.epizy.com/what_is_the_best_commercial_irrigation_controller.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc8df5b0-0c73-485c-9449-57033f47a789/cuisinart_coffee_grinder_setting_for_drip.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_off0000f17a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF17A 5432 bytes
SHA-256: eda3babce1e70a24760eb904dce55c2883b5901851fb09452f20fc6f242eb5a9
font_01_sfnt_off000103d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103D7 10180 bytes
SHA-256: 575279c0a179de45729e6c38b306b9a07ac8bc400440b42dcc65e0061c34a587

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