Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9ea91d873afc059…

MALICIOUS

PDF

34.3 KB Created: 2020-08-19 20:11:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a64a045603fba873ca24fb4d54535cc9 SHA-1: 5e67431619e5c87d5c46d7eea2aa1705662ec602 SHA-256: f9ea91d873afc0593f821dfc539e9e1886cf3b06668a865c74dbc7948ad52c2e
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=logic+circuit+simulator+apk'. This indicates the document's primary purpose is to trick users into clicking a malicious link, likely leading to a further stage of infection. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest a social engineering attack.

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=logic+circuit+simulator+apk In PDF document text
    • http://files.hello-baby-toys.com/uploads/1/3/1/4/131453807/4352687.pdfIn PDF document text
    • http://devusovib.newenglandcockers.com/uploads/1/3/0/9/130969600/bubodelivotefiwul.pdfIn PDF document text
    • http://files.weare-thebeat.com/uploads/1/3/1/3/131397981/lawasamenuzed_legib.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/1/0432/5857/7046/files/palakipelador.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7400/8741/files/blank_eviction_notice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56802730071.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1293/2255/files/word_that_rhyme_with_open.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8429/9936/files/ramsay_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4141/5587/files/9.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0831/9903/files/tonexodedegekogaxasazuwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3407/4523/files/kifidupeliso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7533/8389/files/49817839063.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6779/3817/files/44632796011.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7950/7870/files/nofafuvuwamovesujajod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/2708/3943/files/untrusted_server_certificate_android_studio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9941/3921/files/80298272495.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_off00004416.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4416 5256 bytes
SHA-256: 4b805e2a6f5b89b59f8b327ce24ef9fa3b9fca71262f6eab9f4fe13d2453f3b4
font_01_sfnt_off000055ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55EE 11992 bytes
SHA-256: 160102549eb18b6c10c5233db746b21c7686d96ab4c344f50ab223b7470a9279

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