Malicious PDF — malware analysis report

Static analysis result for SHA-256 962c0fed00ec218a…

MALICIOUS

PDF

55.0 KB Created: 2020-08-19 23:56:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 74a7ccde1851f8349f90615ad82e7227 SHA-1: 278688605249f6b227ce4892de979c6130b4037f SHA-256: 962c0fed00ec218aae8205551c0625f898008b09d9e230f6fdfc3e8664b7194a
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector infrastructure known for malicious activity. The document body itself contains a URL that leads to a known malicious redirector. This suggests the primary purpose of the document is to redirect users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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/pify?keyword=cellule+caliciformi+mucipare+cosa+sono In PDF document text
    • http://gujixuzo.momentumdanceandfit.com/uploads/1/3/1/8/131872225/8411931.pdfIn PDF document text
    • http://files.mywhiteengineering.com/uploads/1/3/0/8/130874587/3713139.pdfIn PDF document text
    • http://zimilivoz.inwardmanfellowship.org/uploads/1/3/1/4/131438234/gasofeliwuwag.pdfIn PDF document text
    • http://files.portieclub.com/uploads/1/3/1/1/131164063/2804805.pdfIn PDF document text
    • http://kobemi.inspiralpathways.com/uploads/1/3/1/6/131637027/museraxutivadulikane.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/1/0432/7833/6158/files/dedosapupelole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sarexomerowomowubufo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8153/9483/files/algorithms_to_live_by_github.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sutapazuvonovojikujabera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2750/5047/files/mapakun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7665/7051/files/81834244737.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8351/2473/files/civil_engineer_experience_certificate_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7274/8709/files/vovakabilokuvanola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84302935330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6396/7906/files/zenix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/satofekefekuwozavobijogut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9440/0414/files/kylie_minogue_auscelebs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8026/9462/files/chillax_audio_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6576/1176/files/mebibazurokebutexoj.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_off0000997a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x997A 5064 bytes
SHA-256: 2933bdb830f340abdb410c2d406cb5ac067597b7940f99efcec8692f3f058ce7
font_01_sfnt_off0000aa99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA99 10528 bytes
SHA-256: 2a2e299d6ead76f633e1fe9faea9cd99d3f01c6dd9df9e6de954a340e0a93258

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