Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3fdbaf737f1b324…

MALICIOUS

PDF

54.4 KB Created: 2020-10-01 06:52:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: e95bf595f5d86054aa0badbb3b20cc35 SHA-1: e2b140eeb82a0167cee6bb310ba515bb1b9cfb4f SHA-256: f3fdbaf737f1b32450dea626353064dc78b3d958923598d4d446cd5b19996175
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/strik?keyword=kogan%2527+s+attitude+scale+pdf In PDF document text
    • http://files.myhoosierhearth.com/uploads/1/3/2/6/132695836/zaketivujolibiri.pdfIn PDF document text
    • http://wedives.ifeelsupernourished.com/uploads/1/3/1/3/131378816/6035783.pdfIn PDF document text
    • http://fezawido.alamochapterfmda.org/uploads/1/3/0/7/130776075/munal.pdfIn PDF document text
    • http://dijilis.mrtasmania.org/uploads/1/3/1/8/131856570/poborilumodop.pdfIn PDF document text
    • http://files.yunkawasiperu.org/uploads/1/3/0/7/130739156/bujiwozow.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://uploads.strikinglycdn.com/files/ffd164c7-46b9-40c9-8826-d63ce6bb4c01/sepimer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af61238a-479c-48b9-ad75-28c3b216bd26/forogamivinoroxidejowu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/071bbd76-33fd-49f6-a7d7-ee4838991db0/kazonulamebip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c37fdf1f-2b85-4a6b-ba23-316e1189427c/51745495275.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4380ed3-f3bd-4905-bd88-b2c8b1c12446/rozedo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8753e191-21d7-43ef-841c-f3be471dd46b/munekuxorogoredefoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e926029-fb08-41f6-aca9-d8fb35c0a69b/lusezowoxono.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/746c97ae-7c2b-40a4-9073-40422cd15177/27953025331.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7647/5290/files/36965377660.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2647/2345/files/tumesi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6627/7534/files/mathematical_logic_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7757/4551/files/menizokotevanosomekudem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0294/3899/files/the_last_door_season_2_chapter_1.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 7

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000085d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85D2 5112 bytes
SHA-256: 69575e7d1a10994fb2a4f89578e0dfe506479304fcba5a3f6de4661f8e1c8c94
font_01_sfnt_off0000975e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x975E 11984 bytes
SHA-256: e0a09dfb4606333c174ceeba4a7a918ec1097e7d7bbcd46b0ab7560009af5c9e
font_02_sfnt_off0000bea2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEA2 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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