Malicious PDF — malware analysis report

Static analysis result for SHA-256 32eee3403e17b78b…

MALICIOUS

PDF

35.9 KB Created: 2020-11-07 06:36:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 012403c91da588b06c59a88ec8bdaeaf SHA-1: 16ff72300ee97a93810a2bec29e62ab708eaacdd SHA-256: 32eee3403e17b78bec68a05c06e55ace69cfabad5ada0e602337bed5761738f3
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/aws?keyword=infinity+apparel+group PDF link annotation
    • https://liziruji.weebly.com/uploads/1/3/4/3/134380663/80eef3cc4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366952/normal_5fa493abaa878.pdfIn PDF document text
    • https://naxedomabaxa.weebly.com/uploads/1/3/1/6/131606472/88eac021035.pdfIn PDF document text
    • https://wavuvavezexa.weebly.com/uploads/1/3/0/7/130775629/bf0be3d82bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365567/normal_5f8e0a8d6dd12.pdfIn PDF document text
    • https://dedofuzogod.weebly.com/uploads/1/3/4/3/134374436/8569705.pdfIn PDF document text
    • http://www.infinityapparelgroup.com/DerzIn 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://dejubanev.files.wordpress.com/2020/11/70554114610.pdfIn PDF document text
    • https://misenebefin.files.wordpress.com/2020/11/paxatamewonubup.pdfIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/husky_torque_wrench_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/desert_biome_animals_pictures.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/jolasipirosuwosojatenigud.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/lijagaxovinepezaz.pdfIn PDF document text
    • https://fazezole.files.wordpress.com/2020/11/metafsica_da_sade.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_off00004179.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4179 4812 bytes
SHA-256: c04752d987ade0639d50b6f729dd0749c33c53c5ec524b3f42f15d989117533d
font_01_sfnt_off000051ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51EC 10464 bytes
SHA-256: 9f0487b136497ae81762de984a78cd3036b79140e7d6c93cb78986f8b3472310
font_02_sfnt_off000074c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74C4 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c