Malicious PDF — malware analysis report

Static analysis result for SHA-256 35ffbbba6c0526ef…

MALICIOUS

PDF

46.2 KB Created: 2020-08-24 01:51:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aebb42c0a2a08902cba73a95851e56a7 SHA-1: c7af4b58d7655b33f42805ef24bc955d3b8ead58 SHA-256: 35ffbbba6c0526efaafa15b351e8b7862429467117d457ead616d02d85ed2bc9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates a malicious redirector link, specifically 'https://ttraff.com/pify?keyword=integers+grade+7+worksheets+with+answers'. This suggests the document is designed to redirect users to malicious sites under the guise of providing educational content. The ML classifier also strongly flagged this PDF as malicious.

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=integers+grade+7+worksheets+with+answers In PDF document text
    • http://gazet.downtownguestsuites.com/uploads/1/3/1/8/131856257/vutosegimusegud.pdfIn PDF document text
    • http://files.earthenhairandbody.com.au/uploads/1/3/0/9/130969354/2029303.pdfIn PDF document text
    • http://wuvodiki.hackmatacktrailracing.com/uploads/1/3/1/3/131378970/1535577.pdfIn PDF document text
    • http://files.sparksprotectionusa.com/uploads/1/3/0/7/130738615/1081312.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/1/0440/7230/4805/files/44345336127.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3917/8399/files/importance_of_analytical_method_validation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6187/7665/files/galaziwidugaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7927/0561/files/chemistry_form_4_chapter_1_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0580/4698/files/rufalo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0733/4810/files/sea_group_annual_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1051/4334/files/oxford_phonics_world_1_vk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/72937103387.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0921/0529/files/amparito_roca_brass_quintet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/93366398369.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 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006902.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6902 5016 bytes
SHA-256: 5252b99fc812c19aa4b37b651eeeeac04b4cae083360231a21ffb09815e50ad3
font_01_sfnt_off00007a1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A1B 10364 bytes
SHA-256: 5b09d6c34bb2ee5c9e580e615b126192bf3946efa7967343acddd5bdde23cc40
font_02_sfnt_off00009d9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D9C 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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