Malicious PDF — malware analysis report

Static analysis result for SHA-256 a12553a9968b05d4…

MALICIOUS

PDF

50.5 KB Created: 2020-10-25 06:06:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: f8e9854022202c94de10b18b6af1c7a8 SHA-1: 3d0eff18d019cfdd2a84a3764e302636d45c61dd SHA-256: a12553a9968b05d4f42c2e2348969c1c928df4b6628022ec159da2794fb9fa82
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://gettraff.ru/pify?keyword=twin+pregnancy+week+by+week+guide In PDF document text
    • https://dabagurujor.weebly.com/uploads/1/3/4/3/134350609/zowizulo-gepusolarugiwa-tefubimusajabi-tonoxupu.pdfIn PDF document text
    • https://pisekubil.weebly.com/uploads/1/3/4/3/134322001/2917634.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7581b70f-4b4e-4efd-bc1f-478fb61ce891/tixedabemedavosu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75855427-b864-4364-9fbf-b79928b00da3/49064723210.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f116765c-cf18-480c-ac51-8f4aa30429ed/homedics_foot_pleaser_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9327/0429/files/best_android_card_reader_app.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9390/4539/files/kidesogajewopelatisinu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08f57cf6-0f77-4b2b-86ac-58ac9c62d83f/jubobagenaxurutovumo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5764559c-46b2-45dc-ac69-16f87c58beb5/doletegaletobabilunofojel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a53912fc-b16d-4802-bc0e-1211f2f5866f/61059796650.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aeccaac3-cce3-4153-a67c-6a875597e008/korelasyon_analizi_nasl_yaplr_spss.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14f9e600-4111-4fd1-a272-6f2ee020759c/38405791886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7857/3468/files/economics_net_syllabus_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/6677/7500/files/4562704329.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8861/8396/files/wikivepataxaxobijajitoser.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/5018/0003/files/making_practice_fun_algebra_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/sesuwu.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/pezogavefaki.pdfIn PDF document text
    • https://s3.amazonaws.com/dujepav/anchor_bolt_standard.pdfIn PDF document text
    • https://s3.amazonaws.com/garorowa/psychology_pre-_test.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/zaxudidobokurizezi.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_off000084ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84EA 5380 bytes
SHA-256: 1259b95564fb0e8d859553549e374e995ee950bbb823ec925d2cde523b2164f3
font_01_sfnt_off0000975e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x975E 10976 bytes
SHA-256: 8beeae2aac19580770920203baea83e23d8d503468a03b7f56f3dc4e94c0b9a4

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