Malicious PDF — malware analysis report

Static analysis result for SHA-256 5045279e0dee9279…

MALICIOUS

PDF

47.4 KB Created: 2020-10-16 05:24:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 52bdbd010154ac201421e270d8492c65 SHA-1: 5cb8215c4cf8c75ba59da79e828cd4de16791ab4 SHA-256: 5045279e0dee9279f5011c8c989aa3a141d20eba0a9c90f2e40400f75cabf836
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.link/pify?keyword=google+play+store+apk+android+4.03 In PDF document text
    • https://site-1038995.mozfiles.com/files/1038995/fobedejefinotif.pdfIn PDF document text
    • https://site-1040988.mozfiles.com/files/1040988/tetitujonebapikute.pdfIn PDF document text
    • https://site-1044162.mozfiles.com/files/1044162/physicochemical_analysis_of_borehole_water.pdfIn PDF document text
    • https://site-1038868.mozfiles.com/files/1038868/sikijusazadurosunipu.pdfIn PDF document text
    • https://site-1036951.mozfiles.com/files/1036951/30729177555.pdfIn PDF document text
    • https://zeginuvo.weebly.com/uploads/1/3/0/7/130775519/dudefireditit.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/nipomomuka_gisotufeje.pdfIn PDF document text
    • https://topodomero.weebly.com/uploads/1/3/2/6/132696018/niker-delupedawuv.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/1/0431/2760/3354/files/21604453509.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/2800/9119/files/barunoxipopafejav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/8276/0601/files/gazenamawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6199/1841/files/nisiko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8118/8003/files/pulsar_titanium_chronograph_100m_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/9875/1135/files/wosabowalezek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/2205/3287/files/ap_stats_2017_frq_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/2188/8409/files/vovofegageredisuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9436/0735/files/vuzodarituwotaxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94fb5bb0-a335-4201-beb5-138fee5e39cc/gejokusevememefo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/531b1d6f-5125-4243-b8b8-3763872d4c76/sorufopuvuxoxebal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6977c69-ee96-4b82-99c0-8d00b2d06166/tavatife.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34d27b53-d060-4979-b2d0-995b6eee32e3/19828130584.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9383/5432/files/carpet_cleaning_missoula_montana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9716/0866/files/namexixadakukezijavupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1248/8348/files/30965934052.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/8049/4485/files/combinations_and_permutations_problems.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_off00007918.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7918 5748 bytes
SHA-256: 6ed2e1fbca5d1131e0344ea30c6482d9a9a5b0cbf0767f27e61c96e683764fb2
font_01_sfnt_off00008cd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CD2 10332 bytes
SHA-256: 1094c3d77d8c02542e90b3f0937457ef7d80c37c2caee495994373dffe055039