Malicious PDF — malware analysis report

Static analysis result for SHA-256 173619af4416f3c1…

MALICIOUS

PDF

55.6 KB Created: 2020-10-28 10:53:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: bd43db0f081d153a64fa903a6ed24cd3 SHA-1: e5157da628f8a1c8a1830683a8e6f4803e31a0e6 SHA-256: 173619af4416f3c176dde11b37943f580692c544cc473ab48f72b630d590872b
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.me/123?keyword=define+alter+public+space In PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/83905a54a030772.pdfIn PDF document text
    • https://fekebejoluxoji.weebly.com/uploads/1/3/4/3/134309121/wezutadivupazikamuve.pdfIn PDF document text
    • https://kifelulamexeb.weebly.com/uploads/1/3/4/3/134310841/liravisariluvenekiko.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/2697538.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/wozumadaku-mukevewurovebu-nefebo.pdfIn PDF document text
    • https://dabituge.weebly.com/uploads/1/3/4/3/134344098/vanenof.pdfIn PDF document text
    • https://puliwavigajog.weebly.com/uploads/1/3/4/4/134469254/natikalujogex.pdfIn PDF document text
    • https://virataxutepubom.weebly.com/uploads/1/3/0/8/130874282/468684.pdfIn PDF document text
    • https://xomipuladijig.weebly.com/uploads/1/3/4/4/134401164/3122368.pdfIn PDF document text
    • https://puliwavigajog.weebly.com/uploads/1/3/4/4/134469254/c4efccd7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390999/normal_5f939e7bbb222.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377414/normal_5f89f0611b29e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413000/normal_5f948f513ced6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366358/normal_5f891a1d863b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375200/normal_5f990df879cfd.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00008c91.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00008c91.bin)
    • http://www.opentle.orgIn extracted file (font_01_sfnt_off00009e11.bin)
    • https://cdn.shopify.com/s/files/1/0494/5575/9527/files/fidaluwogonenu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0590/1991/files/32517045072.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4189/0210/files/tajarabovitukaxusazube.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7253/4166/files/rte_guide_january_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7201/1931/files/gigojewurawagugoxuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4623/8880/files/physical_security_key_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b890bf78-007d-4081-8138-703d3fd2f6d5/devegiforagidef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdcf9e45-4803-40b3-9f55-322d2192f3f2/babup.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 extracted file (font_00_sfnt_off00008c91.bin)
    • http://www.gnu.org/licenses/gpl.htmlIn extracted file (font_01_sfnt_off00009e11.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008c91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C91 5148 bytes
SHA-256: d29dbeab564b2b4b6fc7694d471cf2a87143c53a02b6e91327e9b5028fff849d
font_01_sfnt_off00009e11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E11 6068 bytes
SHA-256: cb159cc9d714520fdf604515834a8e5d6ccdf81551317d8133b939af7313f940
font_02_sfnt_off0000adc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADC1 10160 bytes
SHA-256: bc7a14f4a08e1a5996bea1ca2a46e73236182d02bf023ac573ce20c410f3b5d0