Malicious PDF — malware analysis report

Static analysis result for SHA-256 0de26d77856b94d7…

MALICIOUS

PDF

47.0 KB Created: 2020-07-28 19:27:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8fc6888acff4e1b7c8ff6340325132e0 SHA-1: 559364bb608fa648d00658d1c83d71e5d49f0034 SHA-256: 0de26d77856b94d7ba96d67d87b95450ca6833028218500a263d9fc7234df0f3
194 Risk Score

Malware Insights

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

The PDF contains numerous links to an SEO redirector, which is a common tactic for distributing malicious content or phishing pages. The document body, though heavily obfuscated, suggests a lure related to educational worksheets. The ML classifier strongly indicates maliciousness, and the presence of redirector links points to an attempt to lead the user to a harmful destination.

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=solve+linear+equations+word+problems+worksheet In PDF document text
    • http://files.misssummitinternational.com/uploads/1/3/1/4/131406473/e1190777c.pdfIn PDF document text
    • http://files.amadorrunning.com/uploads/1/3/0/8/130813427/914dc8afb5c.pdfIn PDF document text
    • http://files.nickirutledgephotography.com/uploads/1/3/2/6/132682868/1046495.pdfIn PDF document text
    • http://files.westfieldvictory.com/uploads/1/3/0/7/130739991/debceb4c106.pdfIn PDF document text
    • http://files.thechronicself.com/uploads/1/3/0/8/130874189/93cd0be0c8fe0c3.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/1/0438/2176/0672/files/vemevisin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0812/1242/files/14978943752.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7709/8910/files/wutujivafivupatovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0463/2992/files/pewuxixulisipageromumak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4335/6821/files/didejiwoleraxafixep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2309/8279/files/sedaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5147/5351/files/67647153060.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9496/6429/files/jilotiveletipufefe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1531/5351/files/53000472793.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9549/0721/files/39842158908.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_off00007195.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7195 5668 bytes
SHA-256: 53ecaaeafd30de7750201cdee3f689ca174de6daf7ca1c7821bfdbe583cb1e45
font_01_sfnt_off000084ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84AE 13432 bytes
SHA-256: a5bd6d11a9ecf419fdf5fa0e75d430c8ca428712cdcd69a5b4b7d7c7a72ae3e3

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