Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ff6343858ecb6d6…

MALICIOUS

PDF

40.2 KB Created: 2020-08-15 23:59:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ea4b948c24e2908b0e0b1fc1637f6ffe SHA-1: 43207e465e708ef0b28cda00fd635518dcb67685 SHA-256: 1ff6343858ecb6d631f9d30f276ae40091589beca2b0bcbb3b8511e372f1b338
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. Crucially, one embedded link redirects to `https://ttraff.cc/wb?keyword=kent%20repertory%20book%20pdf`, which is flagged as a malicious redirector. This indicates the document's primary purpose is to lead the user to malicious infrastructure, likely for further exploitation or phishing.

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/wb?keyword=kent%20repertory%20book%20pdf In PDF document text
    • http://zivad.rahimafrooz-ips.com/uploads/1/3/0/8/130814328/rikesamavim.pdfIn PDF document text
    • http://files.coppolillo.com/uploads/1/3/2/6/132695428/jujakuro-razopuwubiwa.pdfIn PDF document text
    • http://files.saracolemft.com/uploads/1/3/1/3/131398134/lekax.pdfIn PDF document text
    • http://files.ayurglo.com/uploads/1/3/2/3/132302718/zadinirakutibit-xisivedonawer-xuludugo-makew.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/1/0435/5863/3631/files/nivubijumaxibivodede.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1157/8776/files/fupidesitetatodak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/1622/8761/files/bams_1st_year_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5650/4744/files/53677220351.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2216/1832/files/pexaxeba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7274/8709/files/brilliant_sanity_buddhist_approaches_to_psychotherapy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4302/8120/files/5930735993.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6285/3794/files/61341953724.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zinigezumapafukutogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1070/9915/files/jack_s_lament_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9476/8792/files/66153043734.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2955/3575/files/viluxaf.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_off000060e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60E2 4888 bytes
SHA-256: d7bbc38df862ed3571f1b20d15b8d9068f9dfdd66f7d3a3ed8e0b06b655176bc
font_01_sfnt_off00007199.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7199 10120 bytes
SHA-256: 5a51c98b743ddf6b265f42d5e5e5daa6648644b61f0e795b6d348dce42785073

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