Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc2c1025826a38cb…

MALICIOUS

PDF

69.4 KB Created: 2020-08-21 21:33:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1875d62252abb84a0b0965a28e039d7d SHA-1: 9fa7f7711c7a23fcfd810f8034a4622724330884 SHA-256: bc2c1025826a38cbb6586875bdc1f0c9eec6af3d5ee509c471b96b5ede60859c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document was flagged as malicious by an ML classifier and contains a large number of embedded links, including one pointing to a known malicious redirector infrastructure at 'ttraff.cc'. The document body contains text related to 'third grade detectives guided reading level' and appears to be generated by wkhtmltopdf, suggesting a lure for educational content that redirects to malicious sites. No scripts were extracted from this sample.

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=third+grade+detectives+guided+reading+level In PDF document text
    • http://files.bbawakeblogs.com/uploads/1/3/1/6/131636655/43fe9b16a7bf.pdfIn PDF document text
    • http://files.rearfacingtoddlers.com/uploads/1/3/0/7/130740391/ef0565af1e4c36a.pdfIn PDF document text
    • http://files.youngravensliteraryreview.org/uploads/1/3/1/4/131407214/zesaboxovenin.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1307/9203/files/47396293376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5623/3638/files/73513396956.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2860/9186/files/anaconda_python_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2065/6545/files/wijolegivetav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4848/4507/files/4944395751.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/93236297381.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1496/3868/files/96382461576.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9558/8005/files/55892520765.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1407/9143/files/denot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5095/1066/files/23404073329.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4017/7308/files/57516713751.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c68c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC68C 4980 bytes
SHA-256: 86060f7814b3df0acc01a9f8f38237a87867aba53dd44589f6e66250f17e484c
font_01_sfnt_off0000d771.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD771 10240 bytes
SHA-256: 76a3ea03f02a6748414ff4dffe4fbdcd993ffc11b8535a6d57f12762455d1c76
font_02_sfnt_off0000fa69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA69 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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