Malicious PDF — malware analysis report

Static analysis result for SHA-256 b23af1bb5a9f0a6e…

MALICIOUS

PDF

39.9 KB Created: 2020-08-03 16:46:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 92d789a5bcd18ff147102293ad4a7cb9 SHA-1: 163f77b6c14138ddec503c5e650e02e20d40b4d3 SHA-256: b23af1bb5a9f0a6e8e8d9cb3bf220f296e5db543c3cda041052db98eca856267
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass of external links, many hosted on Shopify, designed to appear as legitimate documents. One critical heuristic identified a link to a known malicious redirector at `https://ttraff.cc/pify?keyword=bishop+score+adalah+pdf`. The document body contains urgency language, reinforcing the lure to click the malicious link. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=bishop+score+adalah+pdf In PDF document text
    • http://files.thehillcroft.co.uk/uploads/1/3/1/0/131070751/8627579.pdfIn PDF document text
    • http://files.mosaicsupervision.org/uploads/1/3/1/0/131069934/2975414.pdfIn PDF document text
    • http://files.frontrunnerbooks.com/uploads/1/3/1/6/131606670/fobigamikufejit_suroxapebe_takezojojoluwux_walosuwugefeji.pdfIn PDF document text
    • http://files.harvestwineoutfitters.com/uploads/1/3/1/4/131437242/72a587b36f4.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/1/0428/9835/8432/files/nimapudusakodinufuzexive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6269/7894/files/tagisunedina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1370/9722/files/16165361436.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4746/0768/files/xodulofisoneses.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0982/7231/files/43995426996.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4655/2230/files/81852086976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6241/9863/files/nurogixenav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3612/0990/files/54568187982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5597/0464/files/dogodopisomezumubuxevojen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6453/9798/files/38664481585.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/moxoxozetoped.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_off00005eab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EAB 5292 bytes
SHA-256: ace15b6699ab8a14f381fdba810c865905eadd03559f83ba2b02cd80ab29b9b4
font_01_sfnt_off000070aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70AA 10096 bytes
SHA-256: d742d6f9523b24a2b0ba0e951842b1342ce90c6d356a4d0bcecdc3586be9f197

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