Malicious PDF — malware analysis report

Static analysis result for SHA-256 174cb51105e5fc74…

MALICIOUS

PDF

49.7 KB Created: 2020-08-25 10:11:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7d4234425d38546e71af3c7fd07053c9 SHA-1: a3a1fb627ff133865ee1fe0b19132998a25104eb SHA-256: 174cb51105e5fc74f3f4e4f6328b21c4690c4e3d52f9d3626e4bb2659029efd7
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating malicious intent, including links to known malicious redirectors and a link farm designed for SEO manipulation. The document body, though heavily obfuscated, contains a URL that points to a redirector, suggesting it's designed to lead the user to malicious content. The presence of numerous embedded links to external PDFs, many hosted on Shopify, further supports the SEO manipulation and potential phishing or malware distribution vector.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=chota+bheem+tamil+full+movie+free In PDF document text
    • http://files.makeupbybb.com/uploads/1/3/1/3/131381712/zinomezumajiwet_xamaminiwoxesus_radan_gekero.pdfIn PDF document text
    • http://muxak.megsangimino.com/uploads/1/3/0/8/130873826/091fefbdac646.pdfIn PDF document text
    • http://files.forumartspace.com/uploads/1/3/0/7/130740213/tolanudapej_zuvojadadas_fepolumitijapi.pdfIn PDF document text
    • http://ripuxoz.district4trials.org/uploads/1/3/2/3/132303382/wifuseramilire.pdfIn PDF document text
    • http://files.djnancyw.com/uploads/1/3/0/9/130969851/nikowikedobo.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/1/0428/9835/8432/files/mozesuseb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3058/5250/files/xuxejawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8402/1921/files/argos_catalogue_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/5561128363.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/7808/2720/files/copy_paper_5000_sheets_canada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6112/5015/files/21433504952.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4620/7637/files/mortal_kombat_snes_controls.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/performance_appraisal_biases.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6869/3407/files/61460882217.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5706/9736/files/how_to_write_an_undergraduate_cv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7205/2643/files/standar_isi_biologi_sma_kurikulum_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7175/7718/files/vepuxinebijune.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 8

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64C4 2968 bytes
SHA-256: 310bdd79d716680e0d8daf58084561977dd855afc0cd2fca239f1765c13f5d55
font_01_sfnt_off00006f57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F57 4932 bytes
SHA-256: f6efa3fd1d63a8b21a6a560105998c2550ba4785dc1afe47a073dd6cdda2e8c9
font_02_sfnt_off00008006.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8006 10072 bytes
SHA-256: 0e9ef196bc78749b8e83cabb7fd69d6239709358b6825af01d6a62c9fdb9a755
font_03_sfnt_off0000a27d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA27D 16380 bytes
SHA-256: 9c71aaea62549e89be2b80026e8552e529abc9849e27d4ac1176ef2fe88b9bd5

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