Malicious PDF — malware analysis report

Static analysis result for SHA-256 716f6afd7b8f18b8…

MALICIOUS

PDF

46.9 KB Created: 2020-10-21 17:08:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 04dec58cd3edc9b1ab02e704893eda96 SHA-1: e26eca315233fd5248d8cb331aa8d0ec75dc7284 SHA-256: 716f6afd7b8f18b82fd639d250228793f2e88a25cce65aba8d792d074ec132dc
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/aws?keyword=utmost+happiness+pdf In PDF document text
    • https://satobolusiv.weebly.com/uploads/1/3/1/3/131398412/92b006ad24f325.pdfIn PDF document text
    • https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/pigix.pdfIn PDF document text
    • https://fidurelofomus.weebly.com/uploads/1/3/0/7/130740547/jipuzawa.pdfIn PDF document text
    • https://zigegawemofeza.weebly.com/uploads/1/3/1/4/131406932/vunekozisutizutakafe.pdfIn PDF document text
    • https://naxesitigas.weebly.com/uploads/1/3/0/7/130740165/kagizutatuxig.pdfIn PDF document text
    • https://zulatikuwa.weebly.com/uploads/1/3/0/7/130776211/9673907.pdfIn PDF document text
    • https://fotejisatowonu.weebly.com/uploads/1/3/2/3/132302873/dbbb9fc1fa.pdfIn PDF document text
    • https://vunixumo.weebly.com/uploads/1/3/1/4/131453253/8b334509e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bed28cd-a481-4868-9928-8cdb437339d1/wizumupodokitifosi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f597f80d-fdcc-4451-972f-644d36d068ff/lepuzemovagifiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02213c0c-5aa7-47be-83cb-b9976e428a86/lagrange_diferansiyel_denklemi.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/defebarowumej.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/cassia_occidentalis_medicinal_uses.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/vuzapejavidofesowig.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/17005503650.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/pukisuxobijubobute.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/fazeligukimegasepuvu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/3018/3580/files/verb_patterns_table.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/2743/0059/files/xilav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/9331/0631/files/vicks_vaporizer_model_v150_instructions.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_off00007a64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A64 5144 bytes
SHA-256: aab71c14341e769ee57cb1ecef477cc2b867d27f329a1e6553e73dcc70842dbb
font_01_sfnt_off00008bcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BCC 10204 bytes
SHA-256: 5d6e9302823299d74108c73d8b813d1f52b80f3cb530e84eda0d45b3fdb77ddb

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