Malicious PDF — malware analysis report

Static analysis result for SHA-256 a68421feaa055a98…

MALICIOUS

PDF

53.8 KB Created: 2020-10-18 23:57:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 6e5481188911aeccdd1c111ac7faf20a SHA-1: d7f7f51c4c69d41b1a8fc7f1e938f86ae2ded2e6 SHA-256: a68421feaa055a98b17eedd8330ae4b9086e96bda65178e6e5b991d1de7c0eef
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://cctraff.ru/strik?keyword=banjercito+importacion+temporal+de+vehiculos In PDF document text
    • https://gemaxudemaxepeb.weebly.com/uploads/1/3/1/0/131070646/2714978.pdfIn PDF document text
    • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/bfcfaa.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/1/0495/7208/5926/files/92711284398.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8197/4435/files/examples_of_love_in_hamlet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8996/2184/files/wosuveloludabo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4365/9677/files/aosp_keyboard_apk_lollipop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8eceb8b8-9ef1-4884-838c-849c3f17c15f/juripifija.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a17d766-013b-43b4-b31d-74df1c07a2b8/tewikugigowixujiwikoge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6101a34-2e70-4336-be64-511c5a2f8fa8/mubamudew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c658ea8-01d3-4a81-8db0-bee863bdcc60/fikinibotosetafi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d60575ac-541e-4f7e-9add-cd320ee96e65/26191338788.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7127a41b-51e0-48ea-962f-19767a0282fa/51973828586.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d6e8d49-3fa0-470c-b983-77eac5e1ac02/difijobuzabexonizix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/098aa2d1-99ba-41d4-9547-901106ca6e95/wenogezesudibubiwebogari.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acc4bd3f-8653-456b-bcd6-be51df662e5c/38671825492.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/7534/6847/files/multimedia_computing_gerald_friedland.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/8898/4222/files/fipofo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3741/6869/files/fuel_pump_removal_tool_bmw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5575/0049/files/denifigaremokorojuvod.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008fb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FB9 5496 bytes
SHA-256: d1545af09dbe5b1d0a4351cdc495c3b9bf32c80e311faab774f027fc41ff81fc
font_01_sfnt_off0000a240.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA240 11532 bytes
SHA-256: f271d6da5c73d5ff3432050ada7ad22670c127db69e678e61546fb3fa2703094

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