Malicious PDF — malware analysis report

Static analysis result for SHA-256 22f2a2842cae0857…

MALICIOUS

PDF

58.0 KB Created: 2020-08-07 20:01:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 633be3c2e958e88e02257645f650ec82 SHA-1: fc79d7ec4d07ca4523514c3158c22587ea88095b SHA-256: 22f2a2842cae08574381d67f2fd0aa9f2c7b7e5ee237606a1afb825639882a57
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, pointing to ttraff.ru. This URL is embedded within the document body, disguised as a pharmaceutical guideline PDF. The sample also contains a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The primary malicious IOC is the redirector URL.

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=21+cfr+part+11+guidelines+for+pharmaceuticals+pdf In PDF document text
    • http://files.eclexica.studio/uploads/1/3/0/7/130776131/284a959b7.pdfIn PDF document text
    • http://files.kefaloniatravel.net/uploads/1/3/2/6/132680813/darikekat.pdfIn PDF document text
    • http://wozuvo.dermawand.greatwebsitebuilder.com/uploads/1/3/1/4/131453574/7681970.pdfIn PDF document text
    • http://files.cymzsweetkre8tionz.com/uploads/1/3/1/3/131383743/8758762.pdfIn PDF document text
    • http://files.totemfoodproducts.com/uploads/1/3/1/1/131164112/jasiresogiwex-fexufazozuke-fabufa-duvola.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/1/0448/6791/1842/files/ielts_writing_task_1_academic_samples_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5702/9024/files/dell_r730xd_spec_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bixebor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7754/9728/files/28672851345.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4228/2399/files/mabixozitilupojojata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6866/1670/files/80926109032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8570/1025/files/80263636833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7490/2430/files/high_pass_filter_audacity.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6127/2983/files/sademitalugukeketaxisata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/64627086557.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2117/9802/files/kidoliloronumew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5307/8933/files/51029018621.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0390/3127/files/18370559065.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 4

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_off0000a4f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4F5 5660 bytes
SHA-256: 497ab828238bd92545ddd0d74edb74f399ffa4a356b81a68ef41a6f8a5b98261
font_01_sfnt_off0000b813.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB813 9980 bytes
SHA-256: 4d4b68c9cc1582ed0864d1cf12652b6063ad5674c1dfb9ff82e200e7edbb356e

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