Malicious PDF — malware analysis report

Static analysis result for SHA-256 9495d2591d0cca8f…

MALICIOUS

PDF

39.7 KB Created: 2020-08-17 01:46:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bda6f965385794907dfcb6a686f74d12 SHA-1: 3e206441a2e1f4144375193d9d07ebc084510a18 SHA-256: 9495d2591d0cca8fd6b72b5eacb4d78de3ac6b3d199b6ce41153f333855819fb
194 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier and contains a critical heuristic indicating it links to a known malicious redirector. The document body, though partially obfuscated, contains text related to educational worksheets and the malicious URL. The primary malicious URL is https://ttraff.ru/pify?keyword=associative+property+of+multiplication+worksheets+grade+3, which likely serves as a lure to redirect the user to further malicious content. The PDF also contains a large number of other embedded links, many hosted on Shopify, which is characteristic of SEO link farm abuse.

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.ru/pify?keyword=associative+property+of+multiplication+worksheets+grade+3 In PDF document text
    • http://files.patricialino.com/uploads/1/3/1/8/131871480/238345.pdfIn PDF document text
    • http://sizofumo.texasfinesse.com/uploads/1/3/2/6/132696111/lotufulis_vivipe_ronigolitoj.pdfIn PDF document text
    • http://files.operationglobalfreedom.com/uploads/1/3/1/4/131407423/wiwilewik.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9682/6273/files/naguvezefiduvunutub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/fijakesevanapizige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/2465/7056/files/benicar_hct_bula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2358/0830/files/bozaraninokemuxopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1124/2144/files/tenimimokogi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/5555/7282/files/bssc_inter_level_2020_notification.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8115/4198/files/sajesun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4537/1549/files/37418940006.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1219/4463/files/alarm_app_using_android_studio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4909/0200/files/rite_temp_thermostat_manual.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 2

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_off00004d16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D16 5920 bytes
SHA-256: 658489b5b85cf6eaebcb01fb2803a7c6cee0d1dd424028e38f976994c3def3a3
font_01_sfnt_off00006130.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6130 10040 bytes
SHA-256: ba4037bc09ebf7f2f782d126f799c20761a6b37f50fcd99dad3318e4a90b30fd
font_02_sfnt_off0000837b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x837B 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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