Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a900b3b48532cec…

MALICIOUS

PDF

45.1 KB Created: 2020-10-27 03:48:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: a0e459f5d66343decaf23dd5c2f0228d SHA-1: 8637c804859be32f5ad31346674d3a2c7baf46ff SHA-256: 5a900b3b48532cecbd7576dd0844ef7c3be3c5ca30a980ba8e035c67e62a6e14
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://bilewazivabo.weebly.com/uploads/1/3/2/8/132816117/mifegudilevato.pdf.
  • 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://ttraff.me/123?keyword=manhattan+comprehensive+night+%2526+day+high+school In PDF document text
    • https://bilewazivabo.weebly.com/uploads/1/3/2/8/132816117/mifegudilevato.pdfIn PDF document text
    • https://roguxewotare.weebly.com/uploads/1/3/4/3/134319265/wonaxanad.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/44d87feaf8ee.pdfIn PDF document text
    • https://favurujovonelod.weebly.com/uploads/1/3/4/4/134435517/543aa467eb607.pdfIn PDF document text
    • https://wetuxabo.weebly.com/uploads/1/3/0/8/130873937/mekoguronapida-mawen-kazozevuvuvekab.pdfIn PDF document text
    • https://mobuzuwatajol.weebly.com/uploads/1/3/4/3/134310732/lonogididorudis.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006e05.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006e05.bin)
    • https://uploads.strikinglycdn.com/files/2abebb4f-d857-482b-94bd-b400f628e096/2598130236.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/896475a6-986e-4cce-8e52-f1a2c053fc3c/celestes_room_bloodstained.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da273fa4-4f40-4372-bf16-9ef10145e280/nikaxotewujuku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce1cc1ef-1f63-436d-a55b-68b1bf7eaeae/how_to_get_ex_raid_pass_reddit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/645906c2-6eb3-4b98-aab5-f41688bb624a/peradonosav.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/ikea_catalogue_2018_malaysia_download.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/towunipaxuwirajamufarajo.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/23527879354.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/4682/1799/files/43048462337.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/6852/0131/files/intolerancia_a_lactose.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/6852/0131/files/latanuzawekodajudipo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/3555/7794/files/95562468506.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0487/0724/0086/files/kobobiserixodefopagif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7612/7394/files/gutapokafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0623/0168/files/bluetooth_headphones_philips_android_tv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/6251/7909/files/51402827395.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/6270/4281/files/retesevawemus.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 extracted file (font_00_sfnt_off00006e05.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E05 5380 bytes
SHA-256: ba341c3822f987d69d432b3ec4749d5d46e4f3a4223800d521b4ad09cb5a44af
font_01_sfnt_off0000802b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x802B 11540 bytes
SHA-256: 0d3275324f7af51c76db6c601f3ca5877671eb3a6d8e47ea285017db5c87aec9