Malicious PDF — malware analysis report

Static analysis result for SHA-256 adaa178f62605f38…

MALICIOUS

PDF

46.1 KB Created: 2020-10-15 20:27:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 37916b81cbf11e47c456e6c33ea7fcf4 SHA-1: faebf57cde8dcc40b1323f165d7efa26c05181dc SHA-256: adaa178f62605f38ae84760455e895f9950091f49b14677523c629fb0a9a30f4
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://gettraff.ru/123?keyword=picture+compression+app+android In PDF document text
    • https://site-1038605.mozfiles.com/files/1038605/vulofajesipiwavotave.pdfIn PDF document text
    • https://site-1043437.mozfiles.com/files/1043437/wazafinosebunip.pdfIn PDF document text
    • https://site-1037077.mozfiles.com/files/1037077/44240626510.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/wimukotuk-roted.pdfIn PDF document text
    • https://jonukejunuxesa.weebly.com/uploads/1/3/1/4/131409236/jirusivuvubegogiga.pdfIn PDF document text
    • https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/5954b926bf2773.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/xekena.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366627/normal_5f87b91811ba6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366316/normal_5f873687af16f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370053/normal_5f8806d1ce628.pdfIn PDF document text
    • https://site-1039631.mozfiles.com/files/1039631/45938576130.pdfIn PDF document text
    • https://site-1038951.mozfiles.com/files/1038951/dipimerirubosovan.pdfIn PDF document text
    • https://site-1039645.mozfiles.com/files/1039645/xajinonuvu.pdfIn PDF document text
    • https://site-1043279.mozfiles.com/files/1043279/91268039466.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/1/0430/0010/3073/files/zitajemexomogelirubi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0502/0830/files/71086238629.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0297/2320/files/javascript_empty_string_or_undefined.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/3795/7537/files/23950514626.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/8177/2445/files/what_is_a_corpus_luteum_cyst.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4492/8674/files/jakedofetinulibawo.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_off000075ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75ED 5188 bytes
SHA-256: 41ef2b2b9d8c1982db8bc2671f2daebae09484eaea81d569e398cb4b0e865966
font_01_sfnt_off0000876e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x876E 10436 bytes
SHA-256: f584b0ef184e1690fd8e282bb6a14eff98b21eb2a8ada6b12e53897d5bc41d26