Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d0b5ea53b945c23…

MALICIOUS

PDF

47.0 KB Created: 2020-10-25 22:30:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 8827300ef0b8c1b98c9232123a385cf4 SHA-1: 4b43ebe4185b6e373bb366e42cf81e5f54df7ef3 SHA-256: 3d0b5ea53b945c237bfdac38c11e289958e6c2d3df1b9166bd850a2aea68240f
192 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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/123?keyword=tekken+7+ppsspp+android+iso In PDF document text
    • https://kupugaxome.weebly.com/uploads/1/3/0/9/130969415/d4b693eb.pdfIn PDF document text
    • https://fekudumubaf.weebly.com/uploads/1/3/2/6/132681201/3321595.pdfIn PDF document text
    • https://xezefamije.weebly.com/uploads/1/3/4/3/134352880/kalesuw_mexufekobud.pdfIn PDF document text
    • https://tugajepefur.weebly.com/uploads/1/3/1/4/131453805/dc40370d2f.pdfIn PDF document text
    • https://mipirizu.weebly.com/uploads/1/3/2/6/132682564/174fd1b5f85.pdfIn PDF document text
    • https://pukotegifo.weebly.com/uploads/1/3/0/8/130874060/908950.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/mezaguwok.pdfIn PDF document text
    • https://rovumixonisi.weebly.com/uploads/1/3/4/0/134012407/jevuvek-nokemenivo-poxefuw-minuboxadali.pdfIn PDF document text
    • https://polabufasol.weebly.com/uploads/1/3/2/8/132814050/8679043.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006377.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006377.bin)
    • https://cdn.shopify.com/s/files/1/0486/0438/1349/files/instagram_sponsored_post_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/3095/7208/files/zuxapijosudo.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/100_number_line.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/bowokamaruwupezododugon.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/converter_to_word_file_online_free.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/asc_us_e_asc_h.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14b70551-fafa-4b92-bc6d-f44ca04e0d17/lutorofumobojinapebes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4a6f687-9c3c-4848-b3fc-485d565b9b61/34130360632.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42bfe049-0cc3-47bd-ba5f-c258a629c0e8/10771158482.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/vamatekobukafob.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/46668978113.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_off00006377.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off000098cb.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off000098cb.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006377.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6377 5012 bytes
SHA-256: 0e4d739e357b42f6668a8f16960650bc28c45fafa9b573f40a3f3c5e0fb8516b
font_01_sfnt_off00007498.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7498 10480 bytes
SHA-256: ee2d66528766e768b6f16297d248707815cfc52adb0ee5d046da9da17122da3f
font_02_sfnt_off000098cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98CB 16376 bytes
SHA-256: f267a97a42ed964490c0c36cf8d24d30f5cfc386ee24850e75bb3a4991f11828