Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f1e350edf15c5d3…

MALICIOUS

PDF

34.6 KB Created: 2020-08-21 19:11:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bbaacbc7f9799f6936213b1ef970c3ef SHA-1: 250cd88397bd0e7a8885d1d64ce0e2f33ee595b5 SHA-256: 3f1e350edf15c5d359b4065857e068da30964b85fb3df62856b6f4c5c2200eb9
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a malicious redirector link, suggesting a phishing or malware distribution attempt. The document body, though partially corrupted, contains text related to nutritional information and includes the malicious URL, likely a lure to entice users to click. The presence of a link farm and a malicious redirector indicates a probable phishing or content redirection attack.

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=grilled+breakfast+burrito+nutrition+information In PDF document text
    • http://files.aimeewalker.co.nz/uploads/1/3/0/9/130969761/d3ebd066cfa02.pdfIn PDF document text
    • http://files.elgintreepros.com/uploads/1/3/1/6/131636843/8166930.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/1/0439/3756/2779/files/agresti_analysis_of_ordinal_categorical_data.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/88895315386.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0501/7255/files/bomokinigumonazefi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6533/5190/files/gunifiduvobedoxag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7554/3964/files/87477111789.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3321/4621/files/duvozoni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3203/4980/files/minecraft_net_download_jsp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/somuluw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0993/1426/files/kunoxinolirowolofuwaf.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 1

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_off0000492f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x492F 5288 bytes
SHA-256: a274239498f7d0375bbc7344b5b62ea3676a7f3f4d2e7b581b2623d57d97889b
font_01_sfnt_off00005b14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B14 10176 bytes
SHA-256: b73328dcc5abea287d82fd9517b9c7427838c927c5d03fc6d9c933f914d4ab85

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