Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ac65b9f90a8293b…

MALICIOUS

PDF

65.7 KB Created: 2020-08-24 14:46:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 72a07e3d7635e3c849371a048e8dac0d SHA-1: 2d14629f6b8a45882a5b497b7deeceb9d3731515 SHA-256: 8ac65b9f90a8293bbcfb9bb2328be55979492a84ccb6ef72be32a289501b623b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a malicious redirector link disguised as an auditor's report. This link, 'https://ttraff.cc/pify?keyword=auditor%2527+s+report+example', leads to a link farm, indicating a phishing or malicious redirection attempt. The presence of numerous external PDF links further supports the classification as a link farm, likely intended to obscure the final malicious destination or to generate traffic.

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=auditor%2527+s+report+example In PDF document text
    • http://fumumila.runsquadopo.org/uploads/1/3/0/8/130873951/nokoxako_sefawikabuguxos_retox.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/1/0433/2650/5118/files/jivajogubewudeposutegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5713/5257/files/88663154964.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/7215/1714/files/apologies_that_never_came_pierre_jeanty.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3029/9292/files/blender_software_with_crack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/2780/0735/files/man_kyon_behka_re_video_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9315/6259/files/dijov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5982/1209/files/fojinikakaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/mufuxoruzefupesipapule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3741/6869/files/kuvin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7792/7063/files/tetabidamonase.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 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b805.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB805 4972 bytes
SHA-256: 854d2be086f39a2eb464f99015d337910176d4852f3b6fd38a82b961895a935b
font_01_sfnt_off0000c8f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8F4 10208 bytes
SHA-256: a86e8df895b92d9ee12844a84c2adc2646fad6287d3898f9bee81c0aecb4b88e
font_02_sfnt_off0000ebe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBE2 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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