Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ad22ff3a27ba0e1…

MALICIOUS

PDF

38.9 KB Created: 2020-08-09 15:36:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1c595438acb093a02b158dcd3fe0dbd3 SHA-1: 38b79eea798f9828c8785821f51d8e0ed5a24406 SHA-256: 7ad22ff3a27ba0e15947305fa8f9bb92abac2aaaa6a124e008fbf2e2944d7e5b
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to redirector infrastructure designed to obscure the final destination. The primary redirector URL, https://ttraff.com/pify?keyword=cambridge+pet+reading+comprehension+pdf, is identified as malicious. This suggests a phishing or scam attempt, likely using the guise of a free download to trick users into clicking the malicious link. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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.com/pify?keyword=cambridge+pet+reading+comprehension+pdf In PDF document text
    • http://files.flowartspace.com/uploads/1/3/0/7/130775997/begepup.pdfIn PDF document text
    • http://files.lestatwrestling.com/uploads/1/3/1/6/131607093/xugepobi.pdfIn PDF document text
    • http://files.tautsaimnieks.online/uploads/1/3/1/3/131383247/1d00597b.pdfIn PDF document text
    • http://tomoloj.farmacybotanical.com/uploads/1/3/1/4/131483337/juzamubaruvo.pdfIn PDF document text
    • http://files.tyrendarraagriculturalshow.com.au/uploads/1/3/2/7/132711970/6e7e3d840aa5.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/1/0438/6825/8469/files/vitewobovixot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3966/1981/files/odisha_election_result_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8111/3506/files/envision_math_grade_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0428/7383/files/95989822725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4460/0999/files/73572156780.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6163/3439/files/gegik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8539/7152/files/75510461216.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1548/8163/files/56570098141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3815/4653/files/second_conditional_exercises_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6063/3504/files/24732016109.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4671/5040/files/anova_table_calculator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1899/3307/files/bapareguridenimuraxof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2211/3173/files/tijekivusugovinekebefe.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_off00004cb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CB5 5488 bytes
SHA-256: ad23ccc8854a0e7971a38054e0166eb2e21773dde5bfa32e52129edaa7ab6839
font_01_sfnt_off00005f2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F2D 9660 bytes
SHA-256: c346a3f5f718e5f7fdc792b2de5af7a85771c8176c36171b25239e3de424723b
font_02_sfnt_off00008041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8041 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3