Malicious PDF — malware analysis report

Static analysis result for SHA-256 e82280991ba85448…

MALICIOUS

PDF

39.1 KB Created: 2020-08-12 01:07:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8d101f634f0b3eb21883ca9c51b36528 SHA-1: a8f5f460c80b3cd205316b1eb2630a3898eede10 SHA-256: e82280991ba85448f70911b378c6369433592930b9263c2b50bf35eb79b8c744
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link farm designed to lure users to external resources, with one critical link redirecting to known malicious infrastructure. The document body, though heavily obfuscated, contains the URL that is also present in the heuristic firings. The primary attack vector appears to be social engineering via a deceptive link, leading to a malicious redirector.

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=authentic+assessment+for+english+language+learners+o+malley+pdf In PDF document text
    • http://files.thujar.ca/uploads/1/3/1/3/131382841/duzapoguwil_tepefujiko.pdfIn PDF document text
    • http://dawusug.sashawrighttherapy.com/uploads/1/3/1/4/131438474/e6c456.pdfIn PDF document text
    • http://files.jackblairgray.com/uploads/1/3/1/3/131384018/eede518175.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/1/0437/9112/2584/files/zuvegowexibo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4024/2840/files/lawogozubawiguzil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/73039918122.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8063/6833/files/45294688049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4136/6951/files/que_es_preeclampsia_y_eclampsia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4986/0765/files/vasutuvotowoba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6335/2227/files/52666877013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7554/2950/files/4621014329.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6810/4602/files/vezitotidugufumibo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6905/5911/files/napax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3654/0056/files/24794245867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3664/7317/files/50889024799.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3191/0821/files/tabalaganobobel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9371/2286/files/45263795183.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_off000059bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59BC 5660 bytes
SHA-256: 3deca11f60299a4b0a8252249b2e445548b7c72d66e99f13e067d96836fc9644
font_01_sfnt_off00006cd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD4 9992 bytes
SHA-256: 346d5224de00ae76d70bcc9b624c60af4ec3ce6d6bd67126ced57a61f0cab0ba

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