Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e228fc8ac47e1f6…

MALICIOUS

PDF

73.5 KB Created: 2021-04-16 17:42:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 0f1c92db57ad268c6214baa4e151de20 SHA-1: 84f587351d148a3a4779875dc58ab72502a74c30 SHA-256: 2e228fc8ac47e1f6132b36fc187cb830feeb83a156283a2b3bd5369b686a3a4d
186 Risk Score

Malware Insights

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

This PDF document was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a link farm with numerous external URLs, including one that appears to be a lure related to 'Craftsman garage door won't close with remote'. The document's structure and embedded links suggest it is designed to redirect users to potentially malicious websites, likely for credential harvesting or malware distribution.

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
  • 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://mezovuduw.ru/strik?utm_term=craftsman+garage+door+won%2527t+close+with+remote PDF link annotation
    • http://kawafopi.mygamesonline.org/33935834190.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463286/normal_60614c94caeef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393197/normal_5ff6c5d2db7ab.pdfIn PDF document text
    • http://sikevemekoma.mypressonline.com/degrees_of_comparison_of_adjectives_worksheets_for_grade_5.pdfIn PDF document text
    • http://tejovotemikodes.getenjoyment.net/4951380162.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404976/normal_603c8814adea0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415930/normal_604d3642cc680.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379491/normal_5fe59b5b74f0d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368466/normal_605df4948cd4b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422377/normal_600ff9173fcc3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455916/normal_602bfbfb592e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473049/normal_603e3f2229562.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://a62e46b8-d933-4087-892c-e5439cec6991.filesusr.com/ugd/e9cba9_961779bea999471c88cdc77190ccf5bd.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/minabiwa/80157230425.pdfIn PDF document text
    • https://01477de9-116b-42a6-a62c-54244336611e.filesusr.com/ugd/dea9e9_c57202147a2d4da78ae973a08e2120c6.pdf?index=trueIn PDF document text
    • https://ecfc1f44-6648-4072-bff5-6ee4adcfbe4f.filesusr.com/ugd/e5a943_5a1c5a96a6a945feb0ef8434c423a45d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nakevoja/21809080251.pdfIn PDF document text
    • https://s3.amazonaws.com/vefagotoje/how_many_yards_in_sport_weight_yarn.pdfIn PDF document text
    • https://1a441fb4-51dd-4528-a053-eb59ff664e18.filesusr.com/ugd/43d9d5_0a58879cc5cd4e95bdf43888b955369a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tawosutosuxi/gifexasovajevaramek.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_off0000e0b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0B5 5464 bytes
SHA-256: 0ad5a86987343296080adadaabcefe82943c21ffe20f92adda01f9396e8e5758
font_01_sfnt_off0000f336.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF336 10612 bytes
SHA-256: c41f796620980490e7beab36195bb2ecdd240ebe4dd4e0f6281921d48b352ee2