Malicious PDF — malware analysis report

Static analysis result for SHA-256 013a1f52191f60d0…

MALICIOUS

PDF

34.0 KB Created: 2020-08-03 14:28:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9d367447a58ee241d37d0daa058bb336 SHA-1: 08f35c50c376a3185b7b32ae5028eb24e062ceda SHA-256: 013a1f52191f60d0d8bc6b932b92e89c84f6e738c8da3850c36119fd5abcbec7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external resources, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains references to a URL that is also flagged as a malicious redirector. This suggests a phishing or scam attempt using a link farm to distribute malicious content.

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.cc/pify?keyword=avery+template+5260+pdf In PDF document text
    • http://files.ultimatesourceoflove.com/uploads/1/3/1/4/131453498/6490f44.pdfIn PDF document text
    • http://files.stephanienogueras.com/uploads/1/3/1/4/131409909/5467653.pdfIn PDF document text
    • http://files.destinyinthedetails.com/uploads/1/3/1/4/131437886/52ed19c5e738f.pdfIn PDF document text
    • http://files.cliveyou.com/uploads/1/3/1/8/131856331/tegutolej.pdfIn PDF document text
    • http://files.warkprimaryschool.co.uk/uploads/1/3/1/4/131454620/dusereluf-kegeja-vomedisewedenuv-bapexaximo.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/1/0428/6955/5359/files/64770464916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2451/5235/files/redajivogujez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8605/2504/files/77365957627.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2299/2028/files/rogeferugud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1243/1776/files/nata_aptitude_questions_with_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5093/4173/files/bellerophon_and_pegasus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/16074545646.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4763/3575/files/91016380364.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7663/3247/files/introduction_to_geographic_information_systems_8th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7297/0133/files/17401271976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1804/4063/files/femaferimezarezisazol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6678/5949/files/37404243082.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2684/0737/files/fokimagewupale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6034/7551/files/64831146719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1383/2857/files/88534984065.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000047a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47A5 5712 bytes
SHA-256: ba9bb0f8c8c77071d9b1e0f3b7d440e9af3af293320260f2d8abff16f4c8940a
font_01_sfnt_off00005b15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B15 9388 bytes
SHA-256: b8acaa288dc67efbd8c118a31ff43725de07b5add1d8701c95d0546862ea0537