Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d85eccedbd3a884…

MALICIOUS

PDF

37.8 KB Created: 2020-10-24 06:38:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-18
MD5: e3e0ce4085a7e89e80c1ff44c65075d9 SHA-1: 033d1e58cfae84f7792f3cc552f80c0cfb759d4d SHA-256: 5d85eccedbd3a884b64f40e51b4933bf6a005c744b9be247b0b72bf61c8caca1
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://gettraff.ru/wb?keyword=gigabyte%20z390%20gaming%20x%20user%20manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4382209/normal_5f8c1b5c2dca9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393511/normal_5f8f9990838c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366381/normal_5f933a77371cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371267/normal_5f8ae96bc38ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393181/normal_5f8e7cffb6ea8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0501/5837/0991/files/88183646582.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/8414/5574/files/46976695215.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/4438/1082/files/lologonosesowad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/4865/5784/files/android_source_code_security_review.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/billie_jean_guitar_chords.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/short_tricks_for_quantitative_aptitude_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/39123544995.pdfIn PDF document text
    • https://s3.amazonaws.com/kigavanus/absolute_steve_ff7.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/garotiwavi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3689/3599/files/tezexozuxubomusibesuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/7534/6847/files/real_bike_racing_game_mod_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2664/7709/files/stihl_fs45_operating_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5597/1996/files/30445971638.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3216/7068/files/united_healthcare_parekh_pre_auth_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73f9c95a-e25e-425d-9fde-afb3a9776140/melulavenujebukigamawimop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a5f0641-4f26-43f6-8bd6-f93d9ffcc6eb/6049073144.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a28f50c-7166-45bb-ab7d-653013d5cfa7/nuduvonumoki.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49C5 5628 bytes
SHA-256: 756059581342e6ad7af8fe69eabdfa66d1cd25e4a4870c93773868d60921dd01
font_01_sfnt_off00005ce8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CE8 9220 bytes
SHA-256: ad5c1b57776d402750d35dfc4fabbd0a971516a5bbd778fc814146a52f539e78
font_02_sfnt_off00007b93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B93 4324 bytes
SHA-256: ad623bc7c681097dfa1224999cf6cc6072d3ca9a137655dc1129b0261f0b357c

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