Malicious PDF — malware analysis report

Static analysis result for SHA-256 33ada0cd9a20b4e7…

MALICIOUS

PDF

46.7 KB Created: 2020-07-27 22:09:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0fb5b53c2a69584fbbf440c93327b92b SHA-1: 80ba8dd01a04074b045273d76e35b5c58d0c0ab5 SHA-256: 33ada0cd9a20b4e70702e871041eaac3d3fd08c612fe1d17c8510e11ca694696
194 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a critical heuristic identifying a link to a known malicious redirector. Additionally, the PDF contains a large number of external links, many hosted on cdn.shopify.com, suggesting a link farm or SEO poisoning tactic. The ML classifier also strongly indicated maliciousness. No scripts were extracted, and the document body was heavily obfuscated, preventing a deeper analysis of the content's intent beyond the malicious URL.

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=laos+vientiane+travel+guide In PDF document text
    • http://files.oliveministries.org/uploads/1/3/1/6/131607374/wedati_pagofiworow_wubulefo_vugewetebu.pdfIn PDF document text
    • http://files.creekbottomproductions.com/uploads/1/3/1/4/131437636/puvuromarir_levafixog.pdfIn PDF document text
    • http://files.stphilipandjamesnewbentley.com/uploads/1/3/1/8/131871569/kasegawiroxeri.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/1/0429/9869/4042/files/lakorojitutofoji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4074/1275/files/57925500149.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0668/0484/files/venotum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3422/9398/files/2434584162.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kipisoluni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7767/2861/files/rararufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9758/7861/files/47340089071.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9816/8727/files/33473404536.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1543/0559/files/novilimeserifufawinu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6974/4028/files/26977785868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7958/2374/files/wemox.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000078d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78D3 4876 bytes
SHA-256: 13fd989d2220488b495bf37c7e489296d69baab38434148a7f99563068c31956
font_01_sfnt_off00008979.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8979 10568 bytes
SHA-256: 2a662deefb9b8d515523637340375b30840aaaa7a7c02d939ee7b780c9e7ab80

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