Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b555688047bd92d…

MALICIOUS

PDF

75.5 KB Created: 2021-03-23 23:00:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 012311f99ebac7144e5d7d5061b50f76 SHA-1: 4a834d88490b4afce2953bd99f6f52e9f0437e3e SHA-256: 0b555688047bd92d1896491143f39a45f66c2b6c3593f9cd0e9d2a242243b011
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious or scam content. The presence of a "cash app money generator" lure in the document body and the high ML classifier score further indicate a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and link farm heuristics strongly suggest an intent to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://baarspo.ru/wix?keyword=cash+app+money+generator+without+verifying+number PDF link annotation
    • https://wekexobesunolo.weebly.com/uploads/1/3/0/7/130739288/9905403.pdfIn PDF document text
    • https://cdn.sqhk.co/foradimotiri/pgfEjfC/trending_hashtags_on_tiktok_today.pdfIn PDF document text
    • https://cdn.sqhk.co/vofonowul/idaJ9hi/wusivepitogarik.pdfIn PDF document text
    • https://kaperimivegorew.weebly.com/uploads/1/3/4/3/134371305/vofedeguzi.pdfIn PDF document text
    • https://cdn.sqhk.co/giwumazusew/jfrbOih/define_antonyms_of_nostalgia.pdfIn PDF document text
    • http://redtea.space/22511645276met9k.pdfIn PDF document text
    • http://tepepowaz.22web.org/periodic_table_iupac.pdfIn PDF document text
    • https://cdn.sqhk.co/judawube/b8RjghO/custom_lightsaber_hilts_for_sale.pdfIn PDF document text
    • https://rurefidutemajob.weebly.com/uploads/1/3/4/3/134333690/ce82fb.pdfIn PDF document text
    • https://cdn.sqhk.co/veleviziwew/ZgeWHgj/59581663551.pdfIn PDF document text
    • http://liketime.fun/69950023272x6ere.pdfIn PDF document text
    • https://pozivikebesar.weebly.com/uploads/1/3/4/7/134759309/foxovasevapu.pdfIn PDF document text
    • http://potobol.22web.org/jufemerusuvuzifijawodorum.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mafatiwi.rf.gd/swarm_of_cranium_rats_5e.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/adobe_reader_apps_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jujojomojemiz/bhagavad_gita_in_tamil_translation.pdfIn PDF document text
    • https://s3.amazonaws.com/bofake/99020748794.pdfIn PDF document text
    • http://savakaxokajudik.rf.gd/list_of_high_oxalate_foods.pdfIn PDF document text
    • http://joposib.rf.gd/google_chrome_free_filehippo_latest_version.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e759.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE759 5580 bytes
SHA-256: 3e01babbacd54ebbb6e1dd967568afe48a2bb3fd967d29a53fb001d880e57fe4
font_01_sfnt_off0000fa44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA44 11136 bytes
SHA-256: c4d4e9a11fc1da2036fbdb84ce9e654810940322b4f259f795459e708ffbfa07

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