Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa49ed8133590dc1…

MALICIOUS

PDF

106.7 KB Created: 2021-03-24 00:17:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 9bd4f8e8fcb519ace2ae7a26c434d158 SHA-1: 37215a755ae114b6c88be436aa704f22d295aea0 SHA-256: fa49ed8133590dc151ad677463c50f9ae3e6f952f967f50ba5898077e91eaa69
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a critical heuristic identifying a link farm designed to generate SEO traffic. One of the primary links directs to a URL that appears to be part of this scheme. While no scripts were explicitly extracted, the PDF structure and the presence of external links suggest it is designed to redirect users to potentially malicious or spam-related content, aligning with phishing or SEO manipulation tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://resalured.ru/wix?keyword=principles+and+labs+for+fitness+and+wellness+12th+edition+pdf+free PDF link annotation
    • https://jexafowasefuxuv.weebly.com/uploads/1/3/4/5/134588667/30b2e3da405.pdfIn PDF document text
    • https://rokolumer.weebly.com/uploads/1/3/0/9/130969153/mikuzafubobavij_zitoj.pdfIn PDF document text
    • https://gogodelile.weebly.com/uploads/1/3/0/9/130969080/xudekoxa.pdfIn PDF document text
    • http://xutexukoxobofi.mywebcommunity.org/68735531218.pdfIn PDF document text
    • https://zosojelukik.weebly.com/uploads/1/3/1/8/131871698/dasotitul.pdfIn PDF document text
    • https://lovizedisar.weebly.com/uploads/1/3/1/4/131437361/9578574.pdfIn PDF document text
    • https://poginatiru.weebly.com/uploads/1/3/0/8/130874277/f7fa2cbaa7d25.pdfIn PDF document text
    • https://kowuzuworos.weebly.com/uploads/1/3/2/6/132682574/vinatigu-weluvisetam.pdfIn PDF document text
    • http://foripekomufotir.mypressonline.com/the_data_warehouse_etl_toolkit_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409813/normal_5fe186db3f535.pdfIn PDF document text
    • http://jijomaj.getenjoyment.net/rafopeluxotakixafu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384045/normal_605225e1db445.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/gurupixabogivaz/piruziledopovinuvi.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/sylvia_plath_poem_daddy_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/jafujasiwetid/migamexuzezipoxomozi.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/wapisazoboramife.pdfIn PDF document text
    • https://s3.amazonaws.com/fipijife/how_much_does_big_data_cost.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/bopudoma.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015653.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15653 5448 bytes
SHA-256: 4b5d6932973066f59709d9268ffd0fa573d3880e3723edc82d6bf0be9f82c465
font_01_sfnt_off000168d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x168D4 11184 bytes
SHA-256: e06e315c9c84bb63faa8bcf16df6689c03a41039a1dc861f81357b22f510a1a7
font_02_sfnt_off00018ef8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18EF8 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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