Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8b788f8e66ee020…

MALICIOUS

PDF

33.9 KB Created: 2020-08-28 12:42:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d293a0d698f201ff75e2e611ace9f916 SHA-1: db0e241782c1444569d5a73d8ef5fb3c3ac4ba1f SHA-256: e8b788f8e66ee020761eb88cf790225892e94357568b272646a1d7a4e297d2d5
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a construction surveying book. The document also functions as a link farm, pointing to numerous other PDF files hosted on various domains, likely for SEO manipulation or to distribute further malicious content. The ML classifier strongly indicated maliciousness.

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=construction+surveying+and+layout+3rd+edition In PDF document text
    • http://files.theoldbarnlulworthcove.com/uploads/1/3/1/3/131398504/veronamufudukezewun.pdfIn PDF document text
    • http://xozoxeb.zushkabiros.com/uploads/1/3/2/3/132303382/xexelagufaz.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/1/0438/6449/0149/files/57312517828.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8611/1137/files/75326724332.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4381/3538/files/46690041536.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2182/7239/files/vawefudovudazepubofavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4704/0662/files/borderlands_2_art_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7634/6266/files/ho_hey_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3490/1660/files/bhairava_tamil_movie_background_music_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8417/5773/files/poe_card_farming.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5999/2990/files/pokemon_black_rom_hacks.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4953/9989/files/84333586070.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7587/1654/files/tufafol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8734/5304/files/another_life_parents_guide.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 3

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_off0000479f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x479F 5336 bytes
SHA-256: 8857de5e393bb94057339e672dfff6ac03b3c9037a7b808d089fb6d0a0030bca
font_01_sfnt_off000059df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59DF 9644 bytes
SHA-256: e54b5013c5526da8eae773ab837990e9d43e7dd78a581d6ca6b00b4278e4e89c

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