Malicious PDF — malware analysis report

Static analysis result for SHA-256 14aa30224693239a…

MALICIOUS

PDF

42.2 KB Created: 2020-08-14 01:57:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2f65a22fb653257a07a9d983e62b2af0 SHA-1: 1c84f3f5a0b903380cd11b3f3424a86dbfc475fc SHA-256: 14aa30224693239a58ba048993aa9f000d53ba9e69a3564d8c9b1ddd2c0af3fe
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though partially corrupted, contains text suggesting a lure related to a 'journal of pediatric hematology oncology case report' which points to a phishing or scam attempt. The ML classifier also strongly indicated maliciousness.

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.ru/pify?keyword=journal+of+pediatric+hematology+oncology+case+report In PDF document text
    • http://kitopizif.arthurassociates.net/uploads/1/3/1/4/131452821/a9e81.pdfIn PDF document text
    • http://files.asiacontentmarketing.net/uploads/1/3/1/8/131871433/luvisudawemoxe.pdfIn PDF document text
    • http://romaruver.dominicjwalsh.com/uploads/1/3/1/6/131637836/3878a.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/1/0432/7673/0533/files/79959845821.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2866/6785/files/novela_el_alferez_real.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5325/9679/files/nuzufovu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0167/5939/files/bolt_torque_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2964/0854/files/arvind_gupta_toys_from_trash.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0154/4863/files/730280546.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0687/0183/files/45535308909.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7373/2768/files/koxisol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3024/8600/files/fazisig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9167/3763/files/webudetokevoreja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8573/9685/files/tripartite_soul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/podufa.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 1

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_off00006699.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6699 5660 bytes
SHA-256: edc173f818b69e7f30c966403443ed889e738cb42a4b94683665380e238e5a74
font_01_sfnt_off000079b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79B8 9944 bytes
SHA-256: 80723902e715618f55eecb9d1fcbbfebed84e04e21ca2fa4d16881c6b80ed66b

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