Malicious PDF — malware analysis report

Static analysis result for SHA-256 d49517f18dbee449…

MALICIOUS

PDF

42.0 KB Created: 2020-08-22 01:55:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 68801d6f597d39e9378a58adead09e94 SHA-1: fb59548bc4599e36556556eaa51bab99c5ad3a40 SHA-256: d49517f18dbee449b4109f61fc6f0f36b2ea02972192b3a9b20721fafe0aade9
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=equivalent+fractions+on+a+number+line+worksheet'. This URL is presented within the document body, disguised as a worksheet. The PDF also exhibits characteristics of a link farm, with numerous embedded links to external PDFs, many hosted on Shopify. The primary malicious intent appears to be directing users to the ttraff.ru domain.

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=equivalent+fractions+on+a+number+line+worksheet In PDF document text
    • http://files.crossfitremix.com/uploads/1/3/1/3/131379290/a822834d13ad55.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/1/0428/2168/1315/files/rorevuxisadebepolapupebas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/19222714266.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1548/8163/files/capral_extrusion_catalogue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3971/8562/files/windows_7_livecd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3259/8938/files/calcutta_university_form_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/99203043279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4249/5895/files/badelotelenibiri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kirojaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7614/8638/files/37379170691.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2707/0104/files/92818433618.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8298/1281/files/notavuzesulexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6134/4406/files/suduxovi.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 1

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_off0000656b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x656B 5560 bytes
SHA-256: d3027042bf25aa1ddd114e43c3f362ca448763e883336c974e4293d6c1537ccc
font_01_sfnt_off00007844.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7844 10232 bytes
SHA-256: b41be00a8c35ce10f01b08c1f9f6cf8cb1c4f4f1abc24060e18bfb6a85a49f52

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