Malicious PDF — malware analysis report

Static analysis result for SHA-256 072b83fd82b65c21…

MALICIOUS

PDF

38.1 KB Created: 2020-08-18 15:41:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0bd87fccc78909d24a54530042219045 SHA-1: 610026606d694b39a6bdef1a29396c5c828c12ce SHA-256: 072b83fd82b65c2121934f3a1567a5c61d1e1c650cfda54642cf80880e7ed648
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and SEO link farming, pointing to a phishing or scam attempt. The embedded URL `https://ttraff.ru/pify?keyword=handwriting+practice+worksheets+for+4th+graders` is identified as a known malicious redirector. The document body, though heavily obfuscated, contains a similar URL, suggesting the primary goal is to redirect the user to a malicious site.

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=handwriting+practice+worksheets+for+4th+graders In PDF document text
    • http://files.wordsbymapson.com/uploads/1/3/1/8/131856991/897497.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/1/0427/6345/2583/files/fusosewomapapizupap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7257/7946/files/all_accounting_ratios_formulas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9508/9559/files/9047489133.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3213/3278/files/paxetatofelaboraworapa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6658/0382/files/81369285341.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6728/4379/files/rogunofetiwena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9328/7321/files/83438988262.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4143/1464/files/76962383561.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6151/8231/files/non_probability_sampling_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6331/9445/files/busemujosetus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8572/5857/files/form_966_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5820/0725/files/file_converter_to_word_zamzar.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 2

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_off000054af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54AF 5592 bytes
SHA-256: 7fdbef787e5df5650cde6dccb9552ce52b08c085f3b629bd93e3d31cdc80e473
font_01_sfnt_off000067c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67C7 10480 bytes
SHA-256: 7f4727b8779ad74f2f0de46dc9b9aefeaad0a8242890cb2eb02b18f2626d235a

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