Malicious PDF — malware analysis report

Static analysis result for SHA-256 662f55fddde42d24…

MALICIOUS

PDF

44.0 KB Created: 2020-08-16 20:18:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7b4825f4cfaf1da92180713a8b9c102a SHA-1: 86613b43ea1675745400a62593d742365d2d8830 SHA-256: 662f55fddde42d245b411548aae3d553178864d50a958941f3a5eada1afba6fc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of embedded links, many of which point to SEO-optimized PDF files hosted on Shopify. The primary link, however, redirects through 'ttraff.ru', a known malicious redirector, to a lure related to a 'tennis game ps4'. This suggests a phishing or scam campaign using a link farm to obscure the malicious destination. No scripts were extracted, but the PDF structure and embedded links are indicative of a malicious redirection attempt.

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=tennis+game+ps4 In PDF document text
    • http://files.pound4poundathletics.com/uploads/1/3/0/8/130813841/dokawil.pdfIn PDF document text
    • http://files.steadfastanimalsolutions.com/uploads/1/3/1/3/131383630/9911318.pdfIn PDF document text
    • http://files.baumcycles.com/uploads/1/3/2/6/132682171/9640449.pdfIn PDF document text
    • http://files.closeencountersadventures.com/uploads/1/3/1/4/131453674/6395585.pdfIn PDF document text
    • http://files.positivebirthlbc.co.uk/uploads/1/3/1/4/131437724/nixajasuwu_domamekirab_zevizarimow_boruzatumuzufa.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/1/0431/9654/7230/files/50434758207.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3490/1660/files/85992667470.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1275/1523/files/childrens_cardigan_knitting_patterns_to.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2398/3001/files/nacionalismo_mexicano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5381/6728/files/jovenetipegasiloxupuxewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7537/0136/files/lagibekebilibapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6917/6985/files/atm_card_block_application_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3015/1330/files/kufusuwazoxovumuliwaxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4487/2085/files/angular_datepicker_directive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3219/8816/files/90838507927.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6650/7942/files/41901475176.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0206/1215/files/biogas_benefits.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8475/9711/files/pemugududiwulujurozit.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6248 4648 bytes
SHA-256: 4bc69691dcd228d1a46bbf168bfdaf2d56a95aa75ef2680b5ed5d6a0f5b38a97
font_01_sfnt_off000071ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71EF 10372 bytes
SHA-256: aa8d1a37fd2687ac3b68a0930b146e376201cac505a759e18135f37206632530
font_02_sfnt_off00009537.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9537 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176