Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e7fb3f818dba6f7…

MALICIOUS

PDF

112.2 KB Created: 2021-02-15 17:40:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: c47f03f5b4fbb56260ae64d79a7d862b SHA-1: 3f82d0bc900aa65a92b0cab90e85040b313a1cc7 SHA-256: 8e7fb3f818dba6f714018543aa7d5076da2750c216eab3ed9ae5fec21259195c
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://seumenha.ru/wix?keyword=%25D8%25AF%25D8%25A7%25D9%2586%25D9%2584%25D9%2588%25D8%25AF+%25D9%2581%25DB%258C%25D9%2584%25D8%25AA%25D8%25B1+%25D8%25B4%25DA%25A9%25D9%2586+%25D8%25A8%25D8%25B1%25D8%25A7%25DB%258C+%25D9%2585%25D9%2588%25D8%25A8%25D8%25A7%25DB%258C%25D9%2584+%25D8%25A7%25D9%2586%25D8%25AF%25D8%25B1%25D9%2588%25DB%258C%25D8%25AF+%25D8%25B1%25D8%25A7%25DB%258C%25DA%25AF%25D8%25A7%25D9%2586 PDF link annotation
    • https://cdn.sqhk.co/xinulezebi/gipibgj/new_word_games_2020.pdfIn PDF document text
    • https://fiwugepupuladav.weebly.com/uploads/1/3/4/7/134740110/dafad615147d3.pdfIn PDF document text
    • https://mafaredoli.weebly.com/uploads/1/3/2/6/132695491/507bd0990065a.pdfIn PDF document text
    • https://cdn.sqhk.co/wularumijif/gGfrSHa/scary_minecraft_seeds_2020_java.pdfIn PDF document text
    • https://paleforekirito.weebly.com/uploads/1/3/4/5/134579508/xonumofezovutejur.pdfIn PDF document text
    • https://suxavumopej.weebly.com/uploads/1/3/3/9/133999634/dikusewe.pdfIn PDF document text
    • https://zatakigufexip.weebly.com/uploads/1/3/0/7/130738978/ganapilofora-fekuf-nifewovi.pdfIn PDF document text
    • https://nemanuvipiza.weebly.com/uploads/1/3/1/3/131398236/5774706.pdfIn PDF document text
    • https://fiwobezamarevev.weebly.com/uploads/1/3/2/7/132740324/pamaf.pdfIn PDF document text
    • https://kimimidinom.weebly.com/uploads/1/3/1/4/131453749/6b1ac582b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415322/normal_60160beef2542.pdfIn PDF document text
    • https://cdn.sqhk.co/gewigerajoru/SBDhdKw/jepilodovapuz.pdfIn PDF document text
    • https://cdn.sqhk.co/fepogosu/dgcDihD/swingman_griffey_nike.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/batiku/xozuboli.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off00017954.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x17954 30484 bytes
SHA-256: 1966bdfacfc6b555a37a2b70ad1784cc34e5b5fcf6f44d590ec32ab6099ec848
font_00_sfnt_off00012b4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B4B 4068 bytes
SHA-256: eeb5e31d71f00cead1fc940f0cd48c64d31cc2a9b3bda03c141aa0d4294f0e86
font_01_sfnt_off00013929.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13929 10124 bytes
SHA-256: ecfc1bc634066b690dcec2e6c4eaa47c4b2249ac3a0eea3a5e492d9310c01795
font_02_sfnt_off00015c2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15C2F 18684 bytes
SHA-256: b4b7512ce690b8c4a8f9b09a2238c8be07cc4b9072fc6a3c60524cf37dcd8d76

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