Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f8a3f286a2ff31d…

MALICIOUS

PDF

42.6 KB Created: 2020-10-28 20:50:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: b0423f112c2490c393a15f3ca8845829 SHA-1: 190a877ec690645d7fd246e835b2b7b349a9a129 SHA-256: 3f8a3f286a2ff31df3ca25dd8e3a0b3a320fce3d802f1a4dbcb397b6a1cb5daa
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=csr+racing+hack+apk In PDF document text
    • https://bevokelas.weebly.com/uploads/1/3/4/3/134310014/8648721.pdfIn PDF document text
    • https://gogebuzavoriro.weebly.com/uploads/1/3/2/6/132681212/gixomudonodebodawok.pdfIn PDF document text
    • https://tarirubawapub.weebly.com/uploads/1/3/1/6/131606173/tijisozakure_kifimazufafi.pdfIn PDF document text
    • https://direfuxapiw.weebly.com/uploads/1/3/4/3/134371974/xagagap.pdfIn PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/sulijesaraban_nogujepira_megirosezefasok_pemolej.pdfIn PDF document text
    • https://fewefemuge.weebly.com/uploads/1/3/4/3/134372507/tibuzinofi-bupatib-vumimixeme.pdfIn PDF document text
    • https://bimidupixujeg.weebly.com/uploads/1/3/4/3/134319160/22c87ae.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/8925184.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369487/normal_5f8aa220c9a66.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/sidobojugonuxexoz.pdfIn PDF document text
    • https://raxiruzaxulam.weebly.com/uploads/1/3/0/7/130738564/xotusixagupivim-wodelajugefa.pdfIn PDF document text
    • https://luwobidope.weebly.com/uploads/1/3/0/8/130814225/4893388dac3d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426060/normal_5f9992d8498cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367633/normal_5f876375c8721.pdfIn PDF document text
    • https://pejilajapife.weebly.com/uploads/1/3/4/4/134477767/394dd817.pdfIn PDF document text
    • https://zavomafig.weebly.com/uploads/1/3/4/3/134356936/gagagosonarobes.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/1/0502/5067/8464/files/ncert_class_8_english_supplementary_reader.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/0694/1101/files/nemechek_protocol_reviews.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4274/8069/files/27166374367.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1832/8991/files/jiwitatatawi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4649/3605/files/blackjack_strategy_chart.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_off00006871.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6871 5132 bytes
SHA-256: 2095b68bec847f23c093bc431af5923885ae62712ff4d49c1791e4a5ca540aa9
font_01_sfnt_off000079e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79E3 10376 bytes
SHA-256: 5acedd107537c559aee9076c26f9fbdaa4eb74ec9b66ff49888f89753304fca3

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