Malicious PDF — malware analysis report

Static analysis result for SHA-256 92a6bf0429ba2a36…

MALICIOUS

PDF

40.9 KB Created: 2020-07-31 19:10:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0caa980d2a7e17d3131a633bc422aa59 SHA-1: 7f2249eaae5071c75c28b7389e6d7e54a2aab610 SHA-256: 92a6bf0429ba2a36f0979eb7078e94470a35d22cf16c5981187a302bbecce409
194 Risk Score

Malware Insights

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

The PDF contains a deceptive "Midco speed test" lure and embeds a large number of links, including one to a known malicious redirector at `https://ttraff.com/pify?keyword=midco+speed+test`. The presence of numerous links to external PDFs, many hosted on Shopify, suggests a link farm or redirection strategy. The ML classifier strongly indicated maliciousness, and the PDF structure itself was flagged for containing 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.com/pify?keyword=midco+speed+test In PDF document text
    • http://files.plasteringredbridge.co.uk/uploads/1/3/1/3/131383771/7932643.pdfIn PDF document text
    • http://files.clinicaespacosaudebeleza.net/uploads/1/3/1/1/131163872/d00290233b6.pdfIn PDF document text
    • http://files.forestandwatersolutions.com/uploads/1/3/1/8/131857723/jokubodefij.pdfIn PDF document text
    • http://files.westtechmobile.ca/uploads/1/3/1/6/131637562/rapigew.pdfIn PDF document text
    • http://files.scenichillretreat.com/uploads/1/3/1/1/131163705/xowube.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/1/0438/5511/8501/files/vovojagepirinaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7920/5018/files/mafuvemitumatowulawiraga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89186344985.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6720/9883/files/sing_a_christmas_carol_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3663/0422/files/25657015294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4052/9816/files/28994599196.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1054/6074/files/4157578598.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2793/1029/files/xugevoxumoremalonije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1219/4457/files/24669053881.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1349/6222/files/tanufulajogi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9730/0899/files/xafodamixogukol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1123/4197/files/tevunasegodawej.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_off0000637f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x637F 4736 bytes
SHA-256: 4bbf17f0a736f0be75941f0336626e463d5c6cf082f2c684f0a43c731356f0fd
font_01_sfnt_off000073bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73BF 10328 bytes
SHA-256: 5cdf43bfe73140108800ee0aaf48d5ac70a497fb2418d14ac792eda225bd3b77

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