Malicious PDF — malware analysis report

Static analysis result for SHA-256 0460d8b433801047…

MALICIOUS

PDF

141.0 KB Created: 2020-10-30 17:43:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 9615ee93f78f16870c1eea640f3446ed SHA-1: 12a692869a783c08300ee008a77146bb338a79ae SHA-256: 0460d8b433801047acd319c5e7276251e65bfbe131249c8b7d9d8f082ee27127
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.link/123?keyword=super+essex+conference In PDF document text
    • https://kigefewapese.weebly.com/uploads/1/3/4/5/134528385/sajujizibeka.pdfIn PDF document text
    • https://jivexine.weebly.com/uploads/1/3/1/3/131380908/visotulumexa.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/1/0481/4153/3347/files/23063737398.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e53cdb6-c12e-47ad-a19f-5af7fcdb8067/bixekedujafagerale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/1690/2583/files/new_google_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/5091/7784/files/mobile_spy_app_android_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3459/1911/files/37815250534.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/5655/9809/files/vududav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a3a4034-292f-49ed-9fbd-853328d2f308/sojugajixipavojiwek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9085/4566/files/365_bible_stories.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9366/4951/files/24175090826.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6629/2389/files/nhmrc_guidelines_staying_healthy.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/fosfato_de_calcio_dibsico.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001d74f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D74F 4940 bytes
SHA-256: dfbad579d7fe179674db3467c20fb394452d94ee2ee2ce897bef9c59830644c2
font_01_sfnt_off0001e838.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E838 12376 bytes
SHA-256: 2514a5a131b1245f87296d18b1fafc4f29f43813cd86c98681e8a6b894fc381b
font_02_sfnt_off00021035.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21035 16448 bytes
SHA-256: 4d0b7fceb6e0b8544dba10d314310d86ee7e0ac375a8e3b5fd915ca5fa71995c

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