Malicious PDF — malware analysis report

Static analysis result for SHA-256 aace256e93b99807…

MALICIOUS

PDF

46.2 KB Created: 2020-10-29 01:56:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 410d0d887d0eeb3e857ced57f4260b33 SHA-1: 94582b74447dd908f40e43ffdc4edaeedebc3cb0 SHA-256: aace256e93b99807f1dda4d5e2d353c5f8800a84315033bb7cd09213721b9fdc
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://ttraff.cc/123?keyword=igloo+ice+maker+ice103+parts In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370054/normal_5f89647586004.pdfIn PDF document text
    • https://boxavukexuzar.weebly.com/uploads/1/3/0/7/130775797/ec0b7f04fcb.pdfIn PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/wizokulapigitub.pdfIn PDF document text
    • https://gawubodukajine.weebly.com/uploads/1/3/0/9/130969599/dafopobaxivefifo.pdfIn PDF document text
    • https://pawikewam.weebly.com/uploads/1/3/4/4/134445239/lavokenabotomi_bufabux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415061/normal_5f960669cad10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422640/normal_5f9a028098d9d.pdfIn PDF document text
    • https://bimidupixujeg.weebly.com/uploads/1/3/4/3/134319160/963e7f1cbc4e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378618/normal_5f97cc27db1f1.pdfIn PDF document text
    • https://besiwalufeg.weebly.com/uploads/1/3/2/6/132696214/wizovaderu.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/917781.pdfIn PDF document text
    • https://jenafowumavadas.weebly.com/uploads/1/3/1/4/131437472/sutatidukutuzasol.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365628/normal_5f88c19e14c12.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mizeteb/the_algorithm_design_manual_steven_s._skiena_download.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/mignonne_allons_voir_si_la_rose_cavanna.pdfIn PDF document text
    • https://s3.amazonaws.com/samopakamefap/guided_meditation_scripts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/7559/1074/files/76449267532.pdfIn PDF document text
    • https://s3.amazonaws.com/xarojapi/normas_vancouver_bibliografia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0792/4635/files/botobej.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/problem_solving_strategies_engel_download.pdfIn PDF document text
    • https://s3.amazonaws.com/zepifudoxapo/gafafa.pdfIn PDF document text
    • https://s3.amazonaws.com/tetenifeme/12149385780.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/el_discreto_baltasar_gracian.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_off0000755f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x755F 5612 bytes
SHA-256: c559eda6a62253d71d1b075940c456091a54bfe115e5b55bb0a17caaac24d2f5
font_01_sfnt_off00008869.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8869 10312 bytes
SHA-256: 6e5bf39b2ad6bd2b31757e021544baa86945d3dc75b41337ccf55364731ec62b