Malicious PDF — malware analysis report

Static analysis result for SHA-256 84006a2ae214b192…

MALICIOUS

PDF

61.2 KB Created: 2020-10-26 12:11:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: fca394388f4912ba1a434afd8aa35641 SHA-1: 183a80b2c5189c2f3cde25ddbad504e9fb3509ec SHA-256: 84006a2ae214b192dc753536846fa1cc2435c36817328dd5f77654f96eb0b345
162 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/123?keyword=pulmonary+embolism+nice+guidelines'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs. The document body also contains urgency language, suggesting a phishing or scam attempt. While no scripts were explicitly extracted, the nature of the embedded links and the ML classification strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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
  • 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://ttraff.ru/123?keyword=pulmonary+embolism+nice+guidelines In PDF document text
    • https://kusebedanosude.weebly.com/uploads/1/3/1/1/131163667/medoxemikuwozil.pdfIn PDF document text
    • https://zuxobopabure.weebly.com/uploads/1/3/4/3/134344154/1191336.pdfIn PDF document text
    • https://jobubati.weebly.com/uploads/1/3/1/4/131453688/linagavujonuwe-jovoxunufezesem-vapetid-kawofivute.pdfIn PDF document text
    • https://goduvozimaku.weebly.com/uploads/1/3/1/3/131380582/vetomukig_joliterujis.pdfIn PDF document text
    • https://murikupa.weebly.com/uploads/1/3/4/4/134481598/a137bddbdbf.pdfIn PDF document text
    • https://tukibasitotaz.weebly.com/uploads/1/3/4/4/134445351/a3fbee2717.pdfIn PDF document text
    • https://mogidudurunupiz.weebly.com/uploads/1/3/2/6/132695636/katulepunusuvenag.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7186/3961/files/xajofizurafov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/2360/6175/files/vawovil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4888/6684/files/tecumseh_compressor_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6111/6064/files/duplin_county_schools_jobs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7922/7805/files/production_possibilities_table_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/tatovulowolax.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/civil_engineering_irrigation_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/wewuxuviwar/vamez.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/bimedob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3816/8472/files/spoken_english_material_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8565/0848/files/fairy_tale_1_rs3_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2409/6669/files/69285264771.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/articles_on_fundamental_analysis.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/bemovunugatavobod.pdfIn PDF document text
    • https://s3.amazonaws.com/wutezigojuxi/560869942.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_off0000aed4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAED4 5504 bytes
SHA-256: 9c8fd074873d1916a26085616f2b7e9e9b19300d8235bdea5d82afe342073b1c
font_01_sfnt_off0000c16f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC16F 11192 bytes
SHA-256: 5445d014800dcf8d210e84e7232f35f363a4740c2249ba456d56bbac3d8401f0

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