Malicious PDF — malware analysis report

Static analysis result for SHA-256 6542f62bf70f575c…

MALICIOUS

PDF

68.5 KB Created: 2020-08-21 21:41:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ef9afa55bc53170f8e547cf336e34b35 SHA-1: 191752b4a8f903d427f1262ef4d4a73bc99be0bd SHA-256: 6542f62bf70f575cec66b81745cdd668bd37dc6f0f2881c57b57517d28ee9c29
154 Risk Score

Malware Insights

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

The PDF contains a link to a redirector service, which is a common tactic for phishing and scam campaigns. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external links suggests a link farm designed to distribute malicious content. Although no scripts were explicitly extracted, the PDF structure and embedded links indicate a malicious intent to redirect users to potentially harmful sites.

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.cc/pify?keyword=budesonide+and+formoterol+fumarate+powder+for+inhalation
    • http://files.companionsofchrist.org/uploads/1/3/0/9/130969375/3234800.pdf
    • http://files.hoofhearted.store/uploads/1/3/0/8/130874211/6a3c2efa97d989.pdf
    • http://files.anzterriers.com/uploads/1/3/1/1/131164239/5a0606a64b705.pdf
    • http://files.portaldosrestaurantes.com/uploads/1/3/1/8/131857540/2338943.pdf
    • http://files.artworksnepa.com/uploads/1/3/2/7/132740458/735969.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/4981/0080/files/bonolota_sen_poem_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/0623/7604/files/suruzukifuz.pdf
    • https://cdn.shopify.com/s/files/1/0430/9496/6429/files/66874722146.pdf
    • https://cdn.shopify.com/s/files/1/0458/5488/3993/files/guided_reading_level_of_the_drama.pdf
    • https://cdn.shopify.com/s/files/1/0430/8716/7645/files/gavulix.pdf
    • https://cdn.shopify.com/s/files/1/0440/5785/4102/files/mathematics_printable_worksheets_for_kindergarten.pdf
    • https://cdn.shopify.com/s/files/1/0432/6273/8592/files/vedas_in_marathi_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/1537/2953/files/velolesaziz.pdf
    • https://cdn.shopify.com/s/files/1/0448/1276/3302/files/bacteriological_quality_of_drinking_water.pdf
    • https://cdn.shopify.com/s/files/1/0433/1202/1657/files/rijenapomar.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c39d.bin
3ccbfa9ba602d07f30c7a8f18bb977430effe419ab7232b6bd05eff6015df127		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC39D 5424 bytes
font_01_sfnt_off0000d5f1.bin
a049fed49bd74598bd34986e7b4ad685869a726e8c15a66446454e13f53d7f26		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD5F1 14816 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.