Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b0b3fe5a86d1590…

MALICIOUS

PDF

46.9 KB Created: 2020-08-20 18:06:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5028c65cb61da70dd2ca91247774c88d SHA-1: 3f398cfcfe5d5cc640352e875c8ca215be412b0b SHA-256: 6b0b3fe5a86d1590bebe1fd8f0f218bcc172fdf7d2393e1281f82b17548e1d3b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one to a redirector service that is flagged as malicious. The document body and heuristics indicate a lure for a 'hidden video recorder apk pro' download, which likely leads to malware. The presence of numerous SEO-optimized PDF links suggests a link farm used for phishing or malware distribution.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.cc/pify?keyword=hidden+video+recorder+apk+pro In PDF document text
    • http://files.ausablevalleygrangefarmersmarkets.com/uploads/1/3/0/8/130873715/a6d496.pdfIn PDF document text
    • http://vajibami.glendorasleep.com/uploads/1/3/1/8/131857054/mesoxekege-rafurepuwaba-fenexifezujam-vowun.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/1/0433/3250/1656/files/principles_of_geotechnical_engineering_8th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7746/7288/files/biosensors_for_medical_applications_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8034/3967/files/tcs_verbal_ability_questions_with_answers_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1238/2117/files/metevudaxomatabexovejezof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4118/5189/files/lonowizo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1870/6331/files/63332999260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9932/4580/files/zorezugaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/69014942618.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8174/1976/files/47905623109.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6305/8333/files/mobivexojobikufujob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9726/7112/files/game_of_thrones_livros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3624/5142/files/chamorro_english_dictionary.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006368.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6368 4940 bytes
SHA-256: c321d7e15f5d47478639e589a37227f0dae76eb226483600fd9526edc2020320
font_01_sfnt_off0000743d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x743D 10196 bytes
SHA-256: 08faca796f098af211773c6548062d376a8e9b5d4cea71e35b1ca14b15a33386
font_02_sfnt_off0000974d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x974D 16852 bytes
SHA-256: e3b8b1142c05457c9f93cc19be5eb7b1984c558453394b316902b8383988d209

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