Malicious PDF — malware analysis report

Static analysis result for SHA-256 fffab45c728258f0…

MALICIOUS

PDF

35.3 KB Created: 2020-08-22 08:03:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 17ea9f319ac01aa62ebcc274cc733d6b SHA-1: b3fed201cb6aed4e841ea4aa49e90ee24ceae887 SHA-256: fffab45c728258f08e7e8d4c34feb08fa13d601d547c713ae5c2a63163d178c2
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 PDF files hosted on various domains, suggesting a link farm for SEO manipulation or traffic redirection. One of these links, 'https://ttraff.cc/pify?keyword=extra+deep+sided+fitted+sheets', is identified as a known malicious redirector. The ML classifier also 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.cc/pify?keyword=extra+deep+sided+fitted+sheets In PDF document text
    • http://files.juliaremondini.com/uploads/1/3/1/6/131637881/2815227.pdfIn PDF document text
    • http://files.pimpernelwharf.co.uk/uploads/1/3/0/8/130874317/gajezasobotitul.pdfIn PDF document text
    • http://lupilamis.dulceyeseniarodriguez.com/uploads/1/3/2/3/132303079/6153892.pdfIn PDF document text
    • http://files.sandrabekvalac.com/uploads/1/3/1/4/131437627/sigisakerujezudux.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/1/0431/9094/3902/files/ielts_speaking_cue_card_topics_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9539/9325/files/ancient_egypt_under_the_pharaohs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6538/4855/files/wondershare_data_recovery_for_android_full_crack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/14071584027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/8328/4890/files/jovavozubusasek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6015/8873/files/22973191551.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/4599/5932/files/acronis_true_image_2014_software_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0201/9487/files/75730422235.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1481/4882/files/lezuwinejirolinavi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8345/4872/files/the_diary_of_jane_piano_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1067/9206/files/xujesinitavumopedekabine.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 8

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_off00004d51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D51 5124 bytes
SHA-256: 57b6443f3a0b8d1833b3d1d3516de9018f4f967fbef2fe794f115f764d6b50b5
font_01_sfnt_off00005eb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB6 9932 bytes
SHA-256: 56c2775bd1d3e95e29013cf19129806eaf7b0bed88663a41ef0f174296971ae2

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