Malicious PDF — malware analysis report

Static analysis result for SHA-256 606832e850d242ff…

MALICIOUS

PDF

46.0 KB Created: 2020-08-06 14:42:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 819c5b6b7a688d7c2d1be111638a79bd SHA-1: 79d3619df89880c19d3c92816e6875dbdbfa01be SHA-256: 606832e850d242ff67c1d9a966e67991a7034bbc3c08b289b391667db5dfc53d
202 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by an ML classifier and contains links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains URLs that appear to be part of a link farm designed to drive traffic to SEO-optimized PDF files. The presence of a 'download button' heuristic further suggests a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.com/pify?keyword=airport+vocabulary+elementary+pdf In PDF document text
    • http://files.panamvetcorp.com/uploads/1/3/2/6/132681359/354642dc2329.pdfIn PDF document text
    • http://files.coldbrewespresso.com/uploads/1/3/1/3/131382590/gavoxujas.pdfIn PDF document text
    • http://files.desantedesigns.com/uploads/1/3/2/7/132712661/tovon_febekutivit_riduwar.pdfIn PDF document text
    • http://files.donotreplymovie.com/uploads/1/3/1/6/131606175/suxupalobubex.pdfIn PDF document text
    • http://files.mgridetoronto.com/uploads/1/3/0/9/130969185/125abfa619.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/1/0431/1800/2340/files/java_tutorial_javatpoint.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8976/2206/files/pharmaceutical_calculations_ansel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4255/9384/files/zelozafuxevonibatexewe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0234/7168/files/2291388757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5254/7739/files/5713000701.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0624/5534/files/sujesolanulo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9943/7721/files/92832308905.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6638/3768/files/cetoconazol_shampoo_medley_bula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2506/2298/files/7259125870.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2309/8279/files/bamaluvuwofelapogivoxibe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6954/7431/files/ruwilajusibovizem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7230/7875/files/befewifavuzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2834/9079/files/bisovatawubilewoxeteja.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007472.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7472 5412 bytes
SHA-256: 25d9bbfbffa0ce886bcc2b56304df4a15ca983606036f4e7dc0f621f695c0c54
font_01_sfnt_off000086d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86D5 10708 bytes
SHA-256: a1445b0c3a4c828f7a1fbef2592a05445ddba307195f8ab8254a53e0b256c4e5