Malicious PDF — malware analysis report

Static analysis result for SHA-256 0380d03bef2f6196…

MALICIOUS

PDF

49.1 KB Created: 2020-10-29 09:57:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 632a3c37ae493fe609936c6a040f1e9b SHA-1: dafe22f90d5f64c2a4895a5ddb048d843c9cb14c SHA-256: 0380d03bef2f61962872f91c8234ede002165729828321176965fbc27b09d2c3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://gettraff.ru/strik?keyword=3rd+march+2020+news In PDF document text
    • https://mapipuluzobeb.weebly.com/uploads/1/3/1/3/131398440/aa6e82.pdfIn PDF document text
    • https://nulixedupalaz.weebly.com/uploads/1/3/0/7/130739510/644f48.pdfIn PDF document text
    • https://fuparududewon.weebly.com/uploads/1/3/1/8/131856041/suvikixazes.pdfIn PDF document text
    • https://dofazodasi.weebly.com/uploads/1/3/0/8/130873943/xakavupanegedo.pdfIn PDF document text
    • https://wasivexuliji.weebly.com/uploads/1/3/4/2/134236061/3f3ad040186.pdfIn PDF document text
    • https://wonigebegi.weebly.com/uploads/1/3/1/6/131606731/d92c93d0f.pdfIn PDF document text
    • https://bizetuxerupa.weebly.com/uploads/1/3/0/8/130873791/f0d5d.pdfIn PDF document text
    • https://kilutiwoxit.weebly.com/uploads/1/3/1/6/131636983/tifawoxilekutikozi.pdfIn PDF document text
    • https://nirejabepifu.weebly.com/uploads/1/3/4/2/134266024/jinufilimisaranoz.pdfIn PDF document text
    • https://milavigik.weebly.com/uploads/1/3/2/8/132815866/7871146.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bupijila/car_wash_business_plan_in_india.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6712/1565/files/zivinututuxexewil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4435/5739/files/44804677943.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/8511/8638/files/owners_manual_for_bounty_hunter_discovery_3300.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/4864/7835/files/obra_de_teatro_para_nios_cortas.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/62692535614.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7098/0245/files/17702487300.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/8115/7796/files/sazejutivajizidez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3603/3695/files/duxunipefelajexuwafigu.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/26772822775.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/estimation_costing_and_valuation_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8720/2971/files/pokemon_go_dialga_raid_guide.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_off000080fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80FC 5584 bytes
SHA-256: 37ecffc4d96e174dc28a06c409ad97782df9ad1783c1d3b22c8ab88c102e998b
font_01_sfnt_off000093d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93D9 10364 bytes
SHA-256: 53570c334db8a6eb0e3d99e412234cdbb1c56a238434d59fea5e96dacf6de039

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