Malicious PDF — malware analysis report

Static analysis result for SHA-256 1590706c210d1d4c…

MALICIOUS

PDF

38.9 KB Created: 2020-07-30 14:14:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f39362eea15098a932945d3bd8d9054f SHA-1: 696a2f326ce34d51ff1f781f17411e39f242bf04 SHA-256: 1590706c210d1d4c99ae32bffb95c15f5810186b959be58ec68bffb1650815f0
194 Risk Score

Malware Insights

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

The PDF contains numerous links to redirector infrastructure, specifically identified as a malicious redirector and an SEO link farm. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' indicate a strong attempt to direct users to potentially harmful sites. The ML classifier also flagged this PDF with high confidence. While no scripts were extracted, the embedded URLs and link farm structure suggest a phishing or malware distribution attempt.

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=personality+adjectives+worksheet+intermediate+pdf In PDF document text
    • http://files.faithutah.com/uploads/1/3/1/4/131483343/6805518.pdfIn PDF document text
    • http://files.maclucille.com/uploads/1/3/2/6/132682905/gobikonuru_bekezuxal.pdfIn PDF document text
    • http://files.stlukeslanesboro.org/uploads/1/3/0/8/130814101/josulajosam_kivijiri_lozibaf_nijozu.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/1/0433/8935/4142/files/gerewiposakujoguripudu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9073/0405/files/genasebufita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3601/6802/files/81496608840.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2391/7478/files/55320022515.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5963/4591/files/pavenisolepomedolodi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8800/2710/files/35701091912.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5802/7928/files/79160143488.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8407/9523/files/90476441996.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4365/9677/files/31274562756.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7826/2692/files/47598749541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3706/4344/files/pofomotamuvive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0092/2261/files/94414020845.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 7

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_off00005ac4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AC4 5576 bytes
SHA-256: c2f187036363da5704a6f75faa213fffd4a8a95d7b88bcdae393c2f1b7c77201
font_01_sfnt_off00006da6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DA6 9532 bytes
SHA-256: 99cf40cfcbfb52814b90b33c6dfc4c3b64137d5bf47b53e3cfdce9cdda92437d

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