Malicious PDF — malware analysis report

Static analysis result for SHA-256 46b63f74d7856dbb…

MALICIOUS

PDF

52.4 KB Created: 2020-11-01 11:01:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: ea780a293b04c96ac7d6e3f5504998b1 SHA-1: 19c59136e2c7beda7e7dca8eee559d421ec50b20 SHA-256: 46b63f74d7856dbb708d14e73c4363a96b985fc3546d95bd82959981bc7af6e5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high number of external links, many pointing to S3 buckets, suggesting a link farm designed to manipulate search engine results. One critical heuristic identified a link to known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains this URL, indicating an attempt to direct users to potentially harmful content.

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.com/123?keyword=imago+therapy+worksheet In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/black_and_decker_impact_driver_home_depot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/0173/2039/files/cuda_python_programming_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/54280967129.pdfIn PDF document text
    • https://s3.amazonaws.com/fulomufimikim/weber_redline_carburetor_kit_32_36_dgv_-_manual_choke.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/cambridge_igcse_computer_science_programming_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4277/4938/files/gimifijulodozogiwog.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/70495081067.pdfIn PDF document text
    • https://s3.amazonaws.com/kiwopusafize/pakolim.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/kolay_almanca_renme.pdfIn PDF document text
    • https://s3.amazonaws.com/pojojagajevuxa/lamar_county_school_district_superintendent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/0569/0023/files/android_radio_button_listener_example.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/a_grief_observed_free.pdfIn PDF document text
    • https://s3.amazonaws.com/welanisowari/92200803389.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/2441/5382/files/binal.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_off00008d95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D95 5396 bytes
SHA-256: 02903f87af15018c3b83ba1b1d2da2f5ff59b10b1623a3601f2bf8eee0511bdf
font_01_sfnt_off00009fdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FDC 11164 bytes
SHA-256: afab13f74151d4c9a4ad55cb54fc45d2de59e2b4a2c710dd6cb7d7d9412ecf21

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