Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5ecbc29110e3f59…

MALICIOUS

PDF

42.8 KB Created: 2020-10-26 21:08:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: f5fcac5dbb3b4366521eda6ff32447bd SHA-1: a6fbd24ac3b6ff1bb1c2e014ac6238215a57e8d6 SHA-256: c5ecbc29110e3f5948ede7ba718d0c433869a2487537dcfbcd1e118fae555bc6
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.link/pify?keyword=garlic+and+chives+cheese+clouds In PDF document text
    • https://jarapitoxedomel.weebly.com/uploads/1/3/1/4/131437170/jibosugisu.pdfIn PDF document text
    • https://bafovulik.weebly.com/uploads/1/3/1/0/131070506/dipifitakizumod-mawobodiva-wasonuwe.pdfIn PDF document text
    • https://zitidatuviwe.weebly.com/uploads/1/3/4/4/134493200/juxuravup.pdfIn PDF document text
    • https://fekebejoluxoji.weebly.com/uploads/1/3/4/3/134309121/gawud.pdfIn PDF document text
    • https://samomalekadoj.weebly.com/uploads/1/3/1/4/131438786/likud.pdfIn PDF document text
    • https://vodipewelo.weebly.com/uploads/1/3/1/6/131637384/fukotagij-kebewa.pdfIn PDF document text
    • https://xalipifizipig.weebly.com/uploads/1/3/1/3/131379045/wokadoxejobonug.pdfIn PDF document text
    • https://vixeroniwemeful.weebly.com/uploads/1/3/0/7/130740086/5880337.pdfIn PDF document text
    • https://saniluje.weebly.com/uploads/1/3/4/3/134323688/55341.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/zuvefusu_tewojawowebav.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415518/normal_5f947e4f07f8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387243/normal_5f944b9d540d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369647/normal_5f882a40773df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369495/normal_5f88190ea50f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383470/normal_5f8ea13dbecad.pdfIn PDF document text
    • https://kokubexajaluk.weebly.com/uploads/1/3/2/6/132681668/nokire_xuseropiw_busomowojonolud.pdfIn PDF document text
    • https://bitekiparoduj.weebly.com/uploads/1/3/4/0/134017536/2660390.pdfIn PDF document text
    • https://dulopatejobe.weebly.com/uploads/1/3/4/3/134317335/2882586.pdfIn PDF document text
    • https://dowazulipogopu.weebly.com/uploads/1/3/4/3/134322731/musoxawakadune.pdfIn PDF document text
    • https://busiwilepajij.weebly.com/uploads/1/3/4/3/134353274/gerorolodebatanad.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000068e7.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000068e7.bin)
    • https://cdn.shopify.com/s/files/1/0491/8018/0646/files/59823436899.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1576/5153/files/vipevogof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/8039/2103/files/youtube_downloading_app_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/6694/5447/files/guided_bus_tours_london.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9691/5616/files/psc_exam_calendar_december_2020.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_off000068e7.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68E7 5120 bytes
SHA-256: 57e56fbd1a0dae8c8087260afe8a0d478da76cf7af54b3d1d928a9fe37c3e352
font_01_sfnt_off00007a4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A4D 10404 bytes
SHA-256: 6398212f89546f485fb6e7761c67d3ea01e59f2bab8ba80c0724c39f1c3cc48e