Malicious PDF — malware analysis report

Static analysis result for SHA-256 be277e8e03d77dab…

MALICIOUS

PDF

41.8 KB Created: 2020-08-11 22:44:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 25115d466c5227fb7428b7d705d225a1 SHA-1: 4fb4f9386d2cc17b7b13bc998275aac3db0a4aa2 SHA-256: be277e8e03d77dab04ae2eb022fadb3dc1f929b1dfff4039bac9b488c4b5b62b
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, suggesting an attempt at SEO poisoning to drive traffic to malicious sites. The primary malicious link, https://ttraff.ru/pify?keyword=balancing+chemical+equations+worksheet+grade+10+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, contains keywords related to educational worksheets, 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=balancing+chemical+equations+worksheet+grade+10+pdf In PDF document text
    • http://files.flamencoinsheffield.com/uploads/1/3/1/4/131438477/zazodufotugakojalilu.pdfIn PDF document text
    • http://files.egsdmusic.net/uploads/1/3/0/7/130740589/puduxedebes-jalawup.pdfIn PDF document text
    • http://files.geriatricpsychiatryresearch.org/uploads/1/3/1/4/131437246/9287714.pdfIn PDF document text
    • http://files.fulltiltk9training.org/uploads/1/3/1/3/131381539/5525651.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/1/0432/7315/8806/files/qualitative_data_analysis_with_nvivo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5971/4971/files/94440157338.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8767/6063/files/disikujamugakepapoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4995/1125/files/17573206022.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/0860/9703/files/cable_stayed_bridges_2nd_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2619/4336/files/dubugud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3233/6791/files/paradise_lost_milton_italiano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0568/9499/files/21598444682.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4021/9037/files/xuzexugubomemukew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5586/6263/files/37661097457.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5300/6494/files/xozudotavagadetorudenibu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1871/5289/files/9677453668.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 8

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_off00006390.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6390 6096 bytes
SHA-256: a42c05155dc307142e8e723bf1513d7df3564ebeced6aec4095a92772bd819ae
font_01_sfnt_off00007827.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7827 9940 bytes
SHA-256: 88f0497f2aa247f500e3a0a1182bd0f5ba3a4995453453a65a0179458aecd506

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