Malicious PDF — malware analysis report

Static analysis result for SHA-256 042c35fd928d87ab…

MALICIOUS

PDF

35.0 KB Created: 2020-08-16 12:53:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 89ac11ba0158b0ec7139001df09160f0 SHA-1: f4286291a9baed25ed391ef2e9d6e3b376603569 SHA-256: 042c35fd928d87ab809a939b92a5e939c20be898598cc273e743822374b2456f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains multiple embedded links, including one pointing to a known malicious redirector infrastructure. The document body, though obfuscated, contains text and URLs that suggest a lure for educational materials, likely to redirect users to malicious content. 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.cc/pify?keyword=handwriting+alphabet+worksheets+for+kindergarten In PDF document text
    • http://files.kristygloverportfolio.com/uploads/1/3/2/6/132696325/wubemateriwugef_fufiguxim_bakurekaxumivav_pufatisivu.pdfIn PDF document text
    • http://files.iancarlsen.com/uploads/1/3/1/4/131454556/xedutikelo.pdfIn PDF document text
    • http://files.artisticreteleesburg.com/uploads/1/3/1/4/131437421/317c33acc6b3065.pdfIn PDF document text
    • http://files.jameskallembach.com/uploads/1/3/0/9/130969548/bigat.pdfIn PDF document text
    • http://files.adamcoutts.com/uploads/1/3/1/4/131452988/sovodarut-zemosapimate-kiredabusil.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/1/0431/7220/0608/files/41843995834.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8606/1480/files/jabeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/5005907618.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6248/4383/files/64737131520.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5879/7471/files/basic_unix_commands_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9114/9471/files/kadiselexukogepukevunowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4276/5976/files/rozumekudefogupabegoxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2884/8538/files/lunazatoxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7152/7325/files/edogawa_ranpo.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_off0000490b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x490B 5560 bytes
SHA-256: 352989ffc0e83e619cc1c60732b05b08fcebfc32f8920f0933ec46a3c634b804
font_01_sfnt_off00005bf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BF2 10312 bytes
SHA-256: 56ad1f4939de7e880c2fd045f5fa99b64f0c7c7684e16208292c03222ae5e8f3

Open this report in the interactive analyzer, or submit your own file for analysis.