Malicious PDF — malware analysis report

Static analysis result for SHA-256 a83b449436613d70…

MALICIOUS

PDF

40.9 KB Created: 2020-08-19 16:26:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 69bf9b49139668967783c3917fb4cc02 SHA-1: 6426d63d73fa607eafde5f9c17f7bb0d417595df SHA-256: a83b449436613d70a8225b26bce6f8130314dbb08d3a3e46eb44b283b7249fd8
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous links, many pointing to a redirector service that disguises the ultimate destination. The document body and heuristics indicate a social engineering lure related to a "Minecraft mod installer apk", likely intended to trick users into downloading malware. The SE_CLICKFIX heuristic suggests the document may also contain instructions to bypass macro restrictions by executing commands directly, further indicating malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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.com/pify?keyword=minecraft+mod+installer+apk In PDF document text
    • http://files.fueliachemicals.com/uploads/1/3/1/0/131071067/3cf70a46be3ad9b.pdfIn PDF document text
    • http://files.nowwhat-services.com/uploads/1/3/0/8/130873996/9911424.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/1/0437/0956/3034/files/access_fine_location_permission_android_6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6795/7658/files/gilelodovosafarifi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9920/8346/files/40657527453.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9158/3391/files/what_is_centos_home.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1016/8744/files/bastar_university_revaluation_form_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5352/1823/files/19555186883.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4721/4486/files/61479344345.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/74228676841.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2390/9532/files/48695420662.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0637/6611/files/evgeni_malkin_contract.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9306/5877/files/29187045822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4138/2812/files/mozotuxugowutepumu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/1003/4597/files/3655861144.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2172/2015/files/govozetudigelusatini.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

Related samples 6

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006058.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6058 5372 bytes
SHA-256: daf82649842592b28112d57c9f0895d38ff2fffc26fc1693a2fd92d47860f6e2
font_01_sfnt_off00007286.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7286 10596 bytes
SHA-256: a7415a89bf025d93f7d21d3b88d23ade530eeec92fb1950a06acf93f4bd1b888

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