Malicious PDF — malware analysis report

Static analysis result for SHA-256 2055f2d44bd829b0…

MALICIOUS

PDF

45.9 KB Created: 2020-08-25 17:06:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0aaeadc67c292e9a4fbabe1f0f575394 SHA-1: 727cc9cfddf2400bce2e275d840436250d8e7974 SHA-256: 2055f2d44bd829b071e0f7018c2eb2870549054d95305a36a0df269d4221c8cf
194 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, suggesting an attempt at SEO poisoning or link farming. The primary malicious link, https://ttraff.ru/pify?keyword=solving+quadratic+equations+by+factoring+answers+key, is identified as a malicious redirector. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the same keyword and URLs, reinforcing the lure.

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=solving+quadratic+equations+by+factoring+answers+key In PDF document text
    • http://files.stcatherineneasden.com/uploads/1/3/0/7/130776273/poritemizazafota.pdfIn PDF document text
    • http://sefozo.cancelatimesharenow.com/uploads/1/3/1/4/131408854/adafa9.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/1/0438/8379/0491/files/14721040753.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7976/2073/files/mixuzimusor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1421/8143/files/torawiwigirixagopoxelaruj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/biacore_t200_getting_started.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4915/6757/files/tuwixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6859/7158/files/mofuwivorufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8759/2608/files/86684850073.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3427/9062/files/mythology_edith_hamilton.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3911/3895/files/jiwapejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9249/9877/files/kojil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0300/9430/files/zekatopamuzinirix.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
🗂 Part of campaign: alisonpilkington.com 4 samples

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D22 5756 bytes
SHA-256: ad4ce3a712b9d130ad278b4f461ea2ec69f092c60d4a9041630a7536edd91b98
font_01_sfnt_off000070d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70D5 13872 bytes
SHA-256: 4a61b13936110b33ce7bd6aa56a46d65734450bf2e85127471b8def0782ad29a
font_02_sfnt_off00009c5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C5D 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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