Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b8cebf8c05e35d7…

MALICIOUS

PDF

40.1 KB Created: 2020-08-19 20:38:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 33151428c9accbb91f1d2931698dceeb SHA-1: 9fbf5fb157aea96ac0012d670f4970389522b2fe SHA-256: 8b8cebf8c05e35d79d96fc843faa87a2cc6bac565126f2d828f750a474b628bd
202 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many hosted on Shopify, forming a link farm. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is used to obscure the final destination. The document body contains text related to 'arsenic in bottled water consumer reports', suggesting a lure for a health-related scam. 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=arsenic+in+bottled+water+consumer+reports In PDF document text
    • http://files.zhuoshengjin.com/uploads/1/3/0/7/130776487/witufag.pdfIn PDF document text
    • http://files.linkyscloset.com/uploads/1/3/1/4/131452824/3392188.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/1/0432/6886/6212/files/9836620362.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0722/0635/files/sovugoko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5621/8780/files/tipos_de_disacaridos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0455/6403/5237/files/foguxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/9219/2923/files/wufetasanep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8801/1673/files/xuwumulebiwifivowule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9244/3303/files/penozupizodomojujolisufaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2026/9221/files/agriculture_class_10_extra_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0067/7031/files/lapumelujujujetupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0825/1288/files/2437035691.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8660/9573/files/45410400831.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_off00005f41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F41 5440 bytes
SHA-256: 12ada0cc36cc1bc9413f168652d21a34fb5f502709d7b8dc87d9496b3e4af940
font_01_sfnt_off000071aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71AA 9876 bytes
SHA-256: ad840b87848f5cf3a1259cb370f5b5bc02dc7d786afa5f63fadb62dd059f2b81

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