Malicious PDF — malware analysis report

Static analysis result for SHA-256 8816f92c76a9a8a8…

MALICIOUS

PDF

74.4 KB Created: 2021-03-14 10:27:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: de4d80a76bac0eecdbfa53eedc14b711 SHA-1: 914925da1490b778f5856038a8e7b82df9c52031 SHA-256: 8816f92c76a9a8a8177ef6472d45ac3d4625c40b692f6c588673a1b494163fa4
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 0.9991

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://soxebez.ru/123?utm_term=illustrator+template+calendar+adobe PDF link annotation
    • https://kasasifu.weebly.com/uploads/1/3/4/6/134697732/pegesi.pdfIn PDF document text
    • https://zutijuxugovoxi.weebly.com/uploads/1/3/4/6/134684331/xokuziso.pdfIn PDF document text
    • https://cdn.sqhk.co/torazanopuni/c5P6iNN/xowijisol.pdfIn PDF document text
    • https://cdn.sqhk.co/sozaxejiv/ajgjjif/destiny_2_companion_app.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383577/normal_5fc9b247be2a1.pdfIn PDF document text
    • https://dubibezu.weebly.com/uploads/1/3/1/4/131453247/732e6e5c6cb6333.pdfIn PDF document text
    • https://bigonokefexix.weebly.com/uploads/1/3/4/5/134518339/negobupugawe.pdfIn PDF document text
    • https://cdn.sqhk.co/forokuxodel/RPZ9k4O/relarozezupane.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468571/normal_6005c3814c0fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454575/normal_602c5fc6c635d.pdfIn PDF document text
    • https://cdn.sqhk.co/mapetidul/bg6BihF/fudatixojegew.pdfIn PDF document text
    • https://gunobodupisar.weebly.com/uploads/1/3/4/6/134677737/e42280ef694ac20.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/pewebopufupe/kixasalotazoliwolajozad.pdfIn PDF document text
    • https://d6b7b3c7-8429-4d82-9d75-5d5d09e763cc.filesusr.com/ugd/a8c229_94bd95cd7a874910ae79b7c49fa40c1c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pezofut/55297340534.pdfIn PDF document text
    • https://s3.amazonaws.com/boxalewijim/age_of_empires_2_untuk_android.pdfIn PDF document text
    • https://7e073981-ad1c-4081-8dc0-76946ba36063.filesusr.com/ugd/c4f63d_a58e430dd4fb4085876dfd0088f4aea5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/muvevanepen/7305873946.pdfIn PDF document text
    • https://fc06435f-e709-4c80-b59d-96fa470c1a13.filesusr.com/ugd/bdc04d_627d618774cc40f2875dbef1372c3276.pdf?index=trueIn PDF document text
    • https://b7eb3c74-9f10-4efd-a612-efb7ea03662f.filesusr.com/ugd/7198c1_8d99c1017c6e4a8fa1f10a9eb8214d8c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xetasif/gasebaperiz.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/xewolojegigeg.pdfIn PDF document text
    • https://s3.amazonaws.com/gozifep/system_analysis_and_design_course.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/how_to_set_up_headset_on_nec_phone.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_off0000e747.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE747 5296 bytes
SHA-256: 1c71dbe2acf8da863220fddcebda80cfe2c7f54acbb2dcc74b29990eebc63900
font_01_sfnt_off0000f924.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF924 10180 bytes
SHA-256: 806523e6ee46e14615d56d7d3dce663eabda28135eb460bab8c88134148e5e14

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