Malicious PDF — malware analysis report

Static analysis result for SHA-256 888e34f6cf0c0598…

MALICIOUS

PDF

44.1 KB Created: 2020-08-10 04:04:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2ace0738c58406bd87e0550a0f1aceb5 SHA-1: 7c43069ac3aa2319558065116042d3c21950e311 SHA-256: 888e34f6cf0c05987ec3d6a30405b6d09ff91b56d435b78881898db9bee6eb00
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous links, many of which point to a redirector service known to host malicious content. The primary redirector URL, https://ttraff.ru/pify?keyword=afrikaans+to+english+lessons+pdf, is flagged as malicious. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to disguise its malicious nature as a legitimate document. The presence of a large number of external links, many pointing to Shopify-hosted PDFs, indicates a link farm or SEO manipulation tactic to distribute malicious 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=afrikaans+to+english+lessons+pdf In PDF document text
    • http://files.harlowrockschool.com/uploads/1/3/1/4/131483098/4414275.pdfIn PDF document text
    • http://mogunit.eveningstreetharriersxc.com/uploads/1/3/0/9/130969723/ropen_xetolonipowag_mirowinefidava_najixalupoj.pdfIn PDF document text
    • http://files.ashgateheritagearts.co.uk/uploads/1/3/0/7/130739238/ridozipabolute_rejeger_fifuximuxato_dedome.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/1/0434/5177/7185/files/fizifumomemodano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3335/3627/files/borafirawurepezemuwopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7750/1095/files/96939535875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3706/4344/files/10497607956.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5844/5979/files/duzoketazixogasiragugukoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7594/5113/files/cfa_program_curriculum_level_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8531/4715/files/kuvenonuponafatan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5661/0971/files/46453321815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2892/9945/files/97675931230.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0419/9075/files/body_parts_label_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5647/1959/files/5916186028.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4740/3168/files/puxiselalixabudobukosivu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2280/3366/files/82889654832.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_off00006eaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EAF 5356 bytes
SHA-256: 86263c12e79c615d1238bf124051c32b7490811024281c4518e87ee716546048
font_01_sfnt_off000080e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80E4 10264 bytes
SHA-256: 12efb9f9b14292fe2809f5bb077c581a04a1f62c1cc8f86247b1a3b7417e3856

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