Malicious PDF — malware analysis report

Static analysis result for SHA-256 e04ca996787afdd3…

MALICIOUS

PDF

44.5 KB Created: 2020-07-31 14:15:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8e564c558bb5ec10240ea22b28c2e003 SHA-1: bc0225215753dc2f370ba7cf5916f6ec59b317dd SHA-256: e04ca996787afdd3c6747256ccff688172868fc85ce277910cad9480acb1ce85
194 Risk Score

Malware Insights

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

The PDF contains a large number of external links, with the primary heuristic identifying a malicious redirector. The document body, though heavily obfuscated, contains text related to 'gastrulation in frog pdf', likely a lure. The embedded URLs point to a redirector and a link farm hosted on Shopify, suggesting a phishing or malware distribution attempt.

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.com/pify?keyword=gastrulation+in+frog+pdf In PDF document text
    • http://files.insightsandilluminations.com/uploads/1/3/1/4/131453045/485ba9ebd953.pdfIn PDF document text
    • http://files.nazarenemissions.ca/uploads/1/3/1/3/131380627/vutigerogus.pdfIn PDF document text
    • http://files.humanitaseagleeye.org/uploads/1/3/0/9/130969965/kowaliz_zetulubuxo_sibepuga.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/1/0427/4411/9462/files/fipetapebotegulib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1447/1330/files/rixoso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1500/1496/files/32148943841.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7922/8833/files/78916031345.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5951/0424/files/68427129873.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3531/9711/files/11003122075.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1737/1797/files/74231574291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8266/9464/files/50104335071.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4021/9047/files/93355428732.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3423/8362/files/tagumisonexurapemexuses.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7241/4106/files/susezuvipedutimesa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3680/1184/files/62828868648.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 5

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_off0000726e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x726E 5004 bytes
SHA-256: 0ffdfdb1d74fc0f2e6694767085f7211c79a4566b098cf90121c00e581dfea33
font_01_sfnt_off0000837c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x837C 9792 bytes
SHA-256: 208c821ddc3cfa16d288bc311f3a3803aac53f0f2f911c79b8b364a02f729547

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