Malicious PDF — malware analysis report

Static analysis result for SHA-256 8463fa7fc440493d…

MALICIOUS

PDF

38.8 KB Created: 2020-10-08 02:32:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: ebfe409d07c28ba9ff1fc350e6dd3d78 SHA-1: 62d1a50c8e288f26f780625ac47fee4571a93d0a SHA-256: 8463fa7fc440493d97d9a8435366450d5a42a4f7c0117125bfd005c219a8d890
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://ggtraff.ru/strik?keyword=we+the+people+an+introduction+to+ame In PDF document text
    • https://site-1039214.mozfiles.com/files/1039214/gafezitigogogiseko.pdfIn PDF document text
    • https://site-1041857.mozfiles.com/files/1041857/netenadalezidipopum.pdfIn PDF document text
    • http://files.grindfitnesstn.com/uploads/1/3/0/7/130739069/f0c98b595.pdfIn PDF document text
    • http://joxasugub.bennysbnb.com/uploads/1/3/1/4/131407253/3776524.pdfIn PDF document text
    • http://tuzide.chathamkentfashion.com/uploads/1/3/1/6/131637021/6041097.pdfIn PDF document text
    • http://zajala.chsreddevilbaseball.com/uploads/1/3/1/1/131163981/voxetajov-rigog-pulewis-subup.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/1/0496/6694/9269/files/newspaper_front_page_template_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/english_metric_conversion_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/1851/7152/files/28381597342.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1978/7675/files/birds_short_story_and_movie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1419/3311/files/sokorodikudedom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcff5eee-ce7f-48ae-9622-bb0d4192105a/49635980245.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05e24703-0a0c-4feb-acb4-9b072ec9350f/71395175858.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f2d8b72-111c-473d-8abd-3354166f1e8e/38994626268.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a68372b1-364d-472e-a00c-4a2354e157dc/30722174487.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_off00005b6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B6A 5148 bytes
SHA-256: 20e80f88a5fc24e742f654c20a9610dc3f6d9da22b746c0e6a91302e98aebd99
font_01_sfnt_off00006ccf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CCF 9844 bytes
SHA-256: 8e051a243284b72a1c23e27d90e52556b5427e9f907ad6b9e44211b7bcaede53

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