Malicious PDF — malware analysis report

Static analysis result for SHA-256 72342dc4efbce2be…

MALICIOUS

PDF

41.7 KB Created: 2020-08-10 20:42:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 460cc2bc4593261e68e40552e6613d18 SHA-1: ff551281c5465a6c7dce4e8a6bc86676086ea59e SHA-256: 72342dc4efbce2be11973fdff6cec563107e0a42c45173b08357240039bc0c19
194 Risk Score

Malware Insights

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

This PDF document contains a link farm designed to appear as a "convert pdf to word" utility, which redirects to malicious infrastructure. The document's structure and embedded links suggest a phishing or malware distribution lure. While no scripts were explicitly extracted, the PDF format itself can embed JavaScript, and the heuristic firings indicate malicious redirection and link farming tactics.

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=convert+pdf+to+word+converter+download In PDF document text
    • http://files.lovemehemp.com/uploads/1/3/0/7/130739028/26ee30d8a8.pdfIn PDF document text
    • http://files.premiumsteaksandseafood.com/uploads/1/3/1/4/131437157/fukabejexav.pdfIn PDF document text
    • http://files.awicoaching.com/uploads/1/3/0/7/130775465/rumefitirowajebuxepe.pdfIn PDF document text
    • http://files.noelmolloyart.com/uploads/1/3/2/6/132695517/wivegujewotudusotiga.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/1/0433/0687/7080/files/89853177043.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/1522/8839/files/pearson_algebra_2_common_core_workbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4295/5676/files/linitex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9972/4703/files/68718887547.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3113/4365/files/zedigibos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7420/7387/files/die_hard_battery_charger_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5892/8545/files/wefewamofob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1726/3510/files/description_of_andrographis_paniculata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/6800/3228/files/fipagit.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 8

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_off00006706.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6706 5028 bytes
SHA-256: 416c1e066ce70734aa54440f1d11f00572471f9a496a3cfbd6871290af1211f3
font_01_sfnt_off00007844.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7844 9932 bytes
SHA-256: ec9c91a8511fd06ec99b6e3f4e5f678e64d22d7c648eda5655cc8d1d81ada0b6

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