Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ce2d74be4c98b66…

MALICIOUS

PDF

60.7 KB Created: 2020-10-27 18:51:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 2c5c8313f99435df8f02eebb231ed22c SHA-1: 0416a28580c3c5a814aceecb9e10214ce960f0eb SHA-256: 8ce2d74be4c98b6617f144a070cc787cd6dfb13b58cdcac86777aad285868127
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.link/pify?keyword=indian+currency+symbol In PDF document text
    • https://dunujamovexen.weebly.com/uploads/1/3/4/3/134361976/3015161.pdfIn PDF document text
    • https://xikalevu.weebly.com/uploads/1/3/4/3/134319979/buxevu-fazepaw-zewibosumana-lapozetemewa.pdfIn PDF document text
    • https://furureseseruwa.weebly.com/uploads/1/3/4/4/134481841/katofef_nuvajef_sojigemiximuk_rewunojamufa.pdfIn PDF document text
    • https://tenabawik.weebly.com/uploads/1/3/2/7/132710661/9612681.pdfIn PDF document text
    • https://sepikupi.weebly.com/uploads/1/3/0/7/130738949/guwozu.pdfIn PDF document text
    • https://digonowokeke.weebly.com/uploads/1/3/1/8/131856318/lalalajusinop.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/tadib-pepalitegugoj.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/soxuboxesumexi.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/8276696.pdfIn PDF document text
    • https://sowameneritela.weebly.com/uploads/1/3/0/7/130775755/javixokonojudebarum.pdfIn PDF document text
    • https://kuvofexe.weebly.com/uploads/1/3/1/1/131163751/6247835.pdfIn PDF document text
    • https://munujagafunudo.weebly.com/uploads/1/3/0/8/130873736/fukizesifod-bigiti-solalufama.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_01_sfnt_off00007eeb.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_01_sfnt_off00007eeb.bin)
    • http://www.daltonmaag.com/In extracted file (font_04_sfnt_off0000cc0a.bin)
    • http://fedorahosted.org/lohitIn extracted file (font_05_sfnt_off0000da0a.bin)
    • https://uploads.strikinglycdn.com/files/278fee13-9390-45f2-82c1-8bf2d3d06bef/full_guitar_chords_chart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29b7ae0c-d844-43ec-9106-498176450f6d/69313046172.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36b3894b-e1c2-4c20-a448-f9e8840f3c12/vosukigi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f851b6ea-3d4f-406a-b52f-a8b1dd45aca4/90353778500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3441/1157/files/smart_textiles_for_protection.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0659/3696/files/kunuwenufibanagaxopadefi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8262/6710/files/88029435066.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/7481/7693/files/kenobetomolidasofezu.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
    • https://savannah.gnu.org/projects/freefont/In extracted file (font_00_sfnt_off00006ee2.bin)
    • http://www.gnu.org/licenses/In extracted file (font_00_sfnt_off00006ee2.bin)
    • http://www.gnu.org/copyleft/gpl.htmlIn extracted file (font_00_sfnt_off00006ee2.bin)
    • http://scripts.sil.org/OFLIn extracted file (font_01_sfnt_off00007eeb.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_03_sfnt_off0000b6fb.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_03_sfnt_off0000b6fb.bin)

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE2 6472 bytes
SHA-256: 6c6f698eec6fac7236bc6e8c0d8b57f5e99b8440958051c3da98cf8c728d3fc3
font_01_sfnt_off00007eeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EEB 5064 bytes
SHA-256: 3521063fbd28526df983bdf77f1970fa4cf7b1ecca97a3849ed2f6f11959f5fd
font_02_sfnt_off00008ff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FF5 11544 bytes
SHA-256: 982d84add7f434eb979408c0c19f495065b437578fab2ebbe236d141925d3604
font_03_sfnt_off0000b6fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6FB 16164 bytes
SHA-256: c30e5661965e452a019f39001a6ffb609a8281c759ba7d0f8afd6ccd063a2a2e
font_04_sfnt_off0000cc0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC0A 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
font_05_sfnt_off0000da0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA0A 2320 bytes
SHA-256: 2b3891ba7bb24a0c17bc2bbbde1d40304763d7fb8b547756aab3102380204d70