Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b67bd197f9366f2…

MALICIOUS

PDF

40.7 KB Created: 2020-10-17 21:10:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e9abc2747578d3a22bc56a7df2e30261 SHA-1: 7e9959217e69a2b4a40854368bbe8cef148cd1b3 SHA-256: 9b67bd197f9366f2820d1add638df18d0e8c9ffb8394e7cb92a90c54cd47a8b1
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/123?keyword=compile+file+pdf+ke+word In PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/1a27643b41869.pdfIn PDF document text
    • https://razezoxuwen.weebly.com/uploads/1/3/1/4/131453099/246cafbded2.pdfIn PDF document text
    • https://baletepo.weebly.com/uploads/1/3/0/7/130776023/605f1a0fbf.pdfIn PDF document text
    • https://vaxajiwozoli.weebly.com/uploads/1/3/1/6/131637631/4881114.pdfIn PDF document text
    • https://buveziketi.weebly.com/uploads/1/3/1/3/131398526/givabawik.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/1/0435/3972/6487/files/wudituruje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8970/0010/files/88731372705.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/5103/0949/files/student_portal_keiser_university.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ee3ec82-d54f-418c-90b0-bb63cd1bac65/85549503037.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4e9fe96-7152-4f70-9637-0f52a41a5f91/tovusititatalib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ed62132-8e92-4455-aad7-a3dfe1660e24/56271457242.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b0b6539-3bf6-4abc-80fd-af60675c8fa8/nekoliwemebura.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/268e106c-9432-4885-9a3f-a5e8732ddeb8/33419358250.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6eb8fae-359b-4f0c-94f2-3c1eeef703be/86613013567.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5176fbe5-82b0-4245-b674-97db94e53236/8164195603.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca3ad820-31cf-42f4-b45c-8274b69d3297/laduxujadoduzud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/275713a5-a199-47d8-93fe-3258d05e241f/zizejifanupulunurexeduri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc875f80-f60c-40d6-9fb7-22924e111d22/42532713967.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0472/2914/1157/files/tuwajakitobodapuwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7261/3280/files/te_quiero_a_ti_eslabon_armado_lyrics_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2076/5344/files/branson_sawmill_roller_coaster.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006292.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6292 4860 bytes
SHA-256: 0475409480f5ba303958427d72bdffb253c7c7c9df3cb83f570a3bc54b2ebfd1
font_01_sfnt_off00007318.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7318 10292 bytes
SHA-256: 5c87eeb1586864ec5c0521674e72c3fc3b7b0f635ab0e1736bd1937df9ab0bdd

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