Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b8ed86279e17b9b…

MALICIOUS

PDF

42.9 KB Created: 2020-10-26 14:29:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 0792daf1c30ac3749844ec9ebf864c4c SHA-1: 371a7fdec62a9437d3e979061e90a861a5f01a81 SHA-256: 1b8ed86279e17b9b85c9dcc482738e734331d6e0f48d39c509fd5f3bcfce898d
234 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.
  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://cctraff.ru/aws?keyword=security+threats+in+cloud+computing+pdf In PDF document text
    • https://nuvisinuxaxo.weebly.com/uploads/1/3/1/3/131383681/mexutizikuzol.pdfIn PDF document text
    • https://lixaworone.weebly.com/uploads/1/3/1/8/131871871/8005319.pdfIn PDF document text
    • https://vafumigoku.weebly.com/uploads/1/3/1/3/131384305/40deca2afad8b.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/1/0496/0285/5064/files/gesunumo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1966/3522/files/11323223401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2536/6165/files/3867495979.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4500/6743/files/unlearning_back_to_god.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/18411956535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/1921/5265/files/publicidad_en_la_era_digital.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0557/7896/files/thomas_trainz_content_websites.pdfIn PDF document text
    • https://s3.amazonaws.com/samopakamefap/kixirajora.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/cecil_textbook_of_medicine_25th_edition_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/convert_to_word_free_online_converter_without_email.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/ashtanga_yoga_poses_download.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/82386000024.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/kavekanejefemoxi.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/fejovanawu.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/28885943616.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_off0000682f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x682F 5776 bytes
SHA-256: fe274d565ec5153196103fdc5e31464a8124f5d05a962ae25807a82576d08ba9
font_01_sfnt_off00007bb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB0 10208 bytes
SHA-256: b9f2e979c37973718b149d48316db44c8f8077ef801ffa373a262f244b87c23e

Open this report in the interactive analyzer, or submit your own file for analysis.