Malicious PDF — malware analysis report

Static analysis result for SHA-256 572f544899eb1f3c…

MALICIOUS

PDF

50.1 KB Created: 2020-08-20 08:20:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 65e063dc02a84b1314d72d69514d0b1c SHA-1: 43b2fec7cf549d833656d673183f76e8d262297e SHA-256: 572f544899eb1f3c8dd64a7047456779728b6046b806395affe3b5044f92f178
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=letter+of+guarantee+template+rental'. This URL is likely used to redirect users to malicious content. The document body, though heavily obfuscated, also contains this URL and numerous other links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic to increase visibility. The primary intent appears to be luring users to the malicious redirector.

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=letter+of+guarantee+template+rental In PDF document text
    • http://files.postichewigs.com/uploads/1/3/1/4/131454172/6562926.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/1/0430/3313/3209/files/jspdf_autotable_header_font.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4392/8726/files/simple_and_compound_sentences_worksheet_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4358/4162/files/remove_git_submodule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2063/1720/files/bsc_math_notes_calculus_chapter_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4747/7667/files/98634344461.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5410/3713/files/xalag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2344/8736/files/lapokawir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/materialismo_histrico_e_economia_marxista.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9002/5375/files/gusezuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7832/8224/files/bryce_canyon_hiking_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4724/7263/files/basic_accounting_questions_mcqs_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/3544/7711/files/microsoft_certifications_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5193/3078/files/vitekitejaxuzab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1079/3370/files/kabexefukuremukagore.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_off00007a8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A8D 4816 bytes
SHA-256: 037a81e9ea54284bf179d62db030508acd82bceae28e0cb09650c251932e5c66
font_01_sfnt_off00008adb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ADB 10204 bytes
SHA-256: c6cda861d14c176e028942d0bbe83c7c589a2cd810d5213087ca17d392f2efd0
font_02_sfnt_off0000ad7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD7B 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f