Malicious PDF — malware analysis report

Static analysis result for SHA-256 df5ffc8d6ee6ef6b…

MALICIOUS

PDF

42.7 KB Created: 2020-08-18 23:23:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f3d7e2a9be557e0f38acc7631644f41b SHA-1: 003733149be8dc8b1f7bb9cd72ee926929e868f4 SHA-256: df5ffc8d6ee6ef6ba614f6cd53587627d422f234e46f63c08ec2d003edb37a8b
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one pointing to a known malicious redirector (ttraff.com). The document body, though partially corrupted, includes the same URL and other links to external PDFs hosted on various domains. This suggests a link farm or SEO poisoning attack designed to redirect users to malicious content. No scripts were extracted, but the heuristic firings strongly indicate a malicious redirection attempt.

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=tata+bluescope+roofing+sheet+weight In PDF document text
    • http://puxuven.revoltiao.co/uploads/1/3/0/8/130813528/efdedbc79c12.pdfIn PDF document text
    • http://files.endurancegbsouthwest.com/uploads/1/3/0/8/130874627/sifivaguwukewun.pdfIn PDF document text
    • http://nevalotef.wellness.org.sg/uploads/1/3/1/3/131384260/4591653.pdfIn PDF document text
    • http://files.dodici-azpadu.com/uploads/1/3/0/7/130739059/biratekobes-safam.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/1/0428/7909/0855/files/91074215346.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6649/0006/files/foundations_of_analog_and_digital_electronic_circuits_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0180/6997/files/manualidades_material_reciclable_de_navidad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9961/9492/files/25221633857.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7099/7151/files/philosophy_of_early_childhood_education.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5476/8032/files/59842248695.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8463/5544/files/insurance_agent_exam_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6286/1730/files/natazodedorotawuwevidagur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8371/0108/files/jspdf_autotable_cdn.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4131/7276/files/sample_detailed_lesson_plan_in_english.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
🗂 Part of campaign: org.sg 5 samples

Related samples 6

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_off00006552.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6552 5456 bytes
SHA-256: 8e7ce71dc5ff44b4c535f96d85cb3ba8c03903ac7b373c8b8096630b46ee07b7
font_01_sfnt_off000077e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77E7 10672 bytes
SHA-256: 031b42bbe3d0a5b94f5372238b581a090fb52ecfa5002baec9ecb5f530f1a954

Open this report in the interactive analyzer, or submit your own file for analysis.