Malicious PDF — malware analysis report

Static analysis result for SHA-256 55094b66119fabc0…

MALICIOUS

PDF

38.9 KB Created: 2020-08-14 23:44:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c10328005530ea501276fc8411024d3e SHA-1: 50517f59c85f40ae72b5d3137efbee39d46c503b SHA-256: 55094b66119fabc0a245b2c7e0e73bf9e77331c4371853cc418274570f747b20
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, https://ttraff.ru/pify?keyword=fractions+to+percentages+worksheet+ks2, is identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to fractions and percentages, suggesting a lure to disguise the malicious intent. The presence of numerous external links and a malicious redirector indicates an attempt to lead the user to harmful content.

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=fractions+to+percentages+worksheet+ks2 In PDF document text
    • http://files.unwrittentimeline.com/uploads/1/3/1/3/131379246/tilad_zamejomiwudoz_tifawusolo.pdfIn PDF document text
    • http://files.montanasavannahcats.com/uploads/1/3/1/4/131454352/kujekaropimuzos_tijaxatived_vivaduwilewumo.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/1/0438/1645/2258/files/71161702561.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4089/7174/files/58589845289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5543/2348/files/ritefojij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2226/2178/files/48322413039.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1073/4755/files/mipilaxesonig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6818/6015/files/fitipuseg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/pdf_el_neoliberalismo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/63908687591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5301/4423/files/wawizixonavifabulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9500/7137/files/57092316090.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7673/8462/files/sizojaluvexolatoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0380/3808/files/agentur_fr_arbeit_arbeitsbescheinigung.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2577/6288/files/vumoxexivesedutiwopelala.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_off0000597b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x597B 5408 bytes
SHA-256: 0a22a0dd5019641979366f9fddba756df475df999e2c0ccc36defc1beacf8fea
font_01_sfnt_off00006bf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF1 10208 bytes
SHA-256: cfe7ccde65f1d5097bc642062bd09b25f2e9d4c626d2598b802c1971e0e6134c

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