Malicious PDF — malware analysis report

Static analysis result for SHA-256 8248877c7a7fb6d9…

MALICIOUS

PDF

53.9 KB Created: 2020-08-15 20:00:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c984f75ed05511dea368b4a360914ada SHA-1: cd39ebf1fb39187f5cc3c9fd119ecfc1b735bf03 SHA-256: 8248877c7a7fb6d9c2d209f3c6f0653b6fa15f86cc2c310080b580d1bb4dcf73
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious URL, identified as a redirector for SEO-based phishing. The document body, though partially obfuscated, contains text related to the lure and the malicious URL. The ML classifier strongly indicates maliciousness, and the heuristics confirm the use of redirector links for malicious purposes.

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/wb?keyword=stay%20with%20me%20ukulele%20chords%20pdf In PDF document text
    • http://files.akadeltapsiomega.org/uploads/1/3/2/6/132696274/nasubetoki.pdfIn PDF document text
    • http://files.jessicaouellette.com/uploads/1/3/2/6/132682281/zibavuzamebavad.pdfIn PDF document text
    • http://files.createwithease.com/uploads/1/3/2/6/132682290/f796a44e3e.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/1/0437/7850/6904/files/13432831048.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3588/5725/files/7352780661.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7945/7175/files/paralutuloditezosojosoma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5066/3073/files/felazugejiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/6861/4808/files/antigona_kniha.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1051/4334/files/womokigogikusok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6369/6799/files/tegewofaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1505/1163/files/85031287132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/taller_sobre_adjetivos_posesivos_en_ingles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0741/0329/files/dunavavovokiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/duzawubemamomavokam.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off00006e24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E24 5756 bytes
SHA-256: 05ebe13a94efe71fc8f13d3c0bed14ede443ba68c38d17019f40a8dddc78e9a8
font_01_sfnt_off000081a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81A7 16072 bytes
SHA-256: 44825b6e6bfec19817f251af87313020340babe26c78a0476ac37ae440d5e24e
font_02_sfnt_off0000b3c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3C4 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd

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