Malicious PDF — malware analysis report

Static analysis result for SHA-256 08b0d4e1e0d1ac13…

MALICIOUS

PDF

48.0 KB Created: 2020-08-07 14:40:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 96ec0dc69510b57ce08910fbddc10bab SHA-1: 86a1ff53b377c381c19cd7e406e17d7a016b4c60 SHA-256: 08b0d4e1e0d1ac131a3790736c8e7a730601937b2dbca67b3b90b5e40bf74304
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.cc) and are likely part of an SEO link farm. The document body, though heavily obfuscated, contains text related to exercises and a URL that mirrors the redirector. This suggests a malicious intent to manipulate search engine results or lead users to malicious content through a series of redirects.

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=adductor+muscles+exercises+pdf In PDF document text
    • http://files.downtowndairyqueen.com/uploads/1/3/2/6/132681479/dijugabelar.pdfIn PDF document text
    • http://files.norchestergardenclub.com/uploads/1/3/1/8/131871984/064a2f82.pdfIn PDF document text
    • http://files.mrkohler.com/uploads/1/3/2/6/132696621/mudegakojilajaw_kipudageb_mavokale_wapumimo.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/1/0428/0025/1036/files/ketones.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2878/1973/files/zuzoliwunebuboguzikefopem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/84020754419.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4959/9651/files/zupibarepegesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3998/0711/files/wagurijuwepelapewemavupi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7916/2263/files/22546701737.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1246/4535/files/bsava_manuals_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0085/5706/files/pefiduroxizopibun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0441/8459/files/scratch_2._0_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1184/0927/files/vajolimaputavimuzaxasugiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/5482/9463/files/flight_of_the_bumblebee_partitura_piano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5833/9733/files/xebibir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4608/2472/files/regcure_pro_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2123/6381/files/58753041913.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_off0000712b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x712B 4924 bytes
SHA-256: 76450fb062f882cd32fc3b3d347f3d908e38c891b3ccc5b07ad60e9aaf4f9eff
font_01_sfnt_off000081f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81F2 10132 bytes
SHA-256: 0c6fe86e13ef65951b08c2466e7043e6ade543a7bf6415331d7468b1d3f423c0
font_02_sfnt_off0000a49a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA49A 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361