Malicious PDF — malware analysis report

Static analysis result for SHA-256 bba0e113d922da75…

MALICIOUS

PDF

35.1 KB Created: 2020-08-09 04:09:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 70fa8cbffce992062346c93478d99197 SHA-1: 19192118f3fb5908d03e09f05e2c0818708491b5 SHA-256: bba0e113d922da75dff4379d2b5258fc76b1de4bdfa940f2eb77ddb012f13d2a
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 to 'ttraff.com', suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text related to academic subjects, likely used as a lure. No scripts were extracted from this sample.

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=applied+finite+mathematics+pdf In PDF document text
    • http://files.irwinpta.org/uploads/1/3/0/9/130969089/parus_tigalutirexig.pdfIn PDF document text
    • http://gifapigu.dare-h2020.org/uploads/1/3/1/6/131606289/fisavaxaxupez-xaruj-bipemuwogi-subefimawajujo.pdfIn PDF document text
    • http://nusixafis.simplylawns.us/uploads/1/3/0/8/130874474/tewokusamojemagal.pdfIn PDF document text
    • http://files.sheppardinternational.net/uploads/1/3/1/3/131380008/wevexada_mutezolojow.pdfIn PDF document text
    • http://files.stressfreefurniture.co.nz/uploads/1/3/2/3/132303077/wewiva-pizekopabireg.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/1/0430/4296/3613/files/16183871931.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9531/7911/files/34523605253.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2661/1356/files/mpmsu_bsc_nursing_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3346/7807/files/linear_and_binary_search_in_data_structure_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7651/8049/files/65684630293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1659/3312/files/tatiber.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0005/2387/files/9086663160.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7661/6341/files/pengertian_populasi_dalam_biologi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2027/1264/files/fogodinim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/clawhammer_banjo_for_the_complete_ignoramus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9864/5404/files/80109586179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0654/8377/files/3d_movies_download.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004caa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CAA 5288 bytes
SHA-256: 7e2281de8601af3a102d12245339257afe0316e9613b05845968a918d71c4daf
font_01_sfnt_off00005e88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E88 9740 bytes
SHA-256: 3c4b11cc32e3577779085d9450dd2eae912e9335ba54a2b75c1474ba258da8b4

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