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)
MD5: 8e564c558bb5ec10240ea22b28c2e003 SHA-1: bc0225215753dc2f370ba7cf5916f6ec59b317dd SHA-256: e04ca996787afdd3c6747256ccff688172868fc85ce277910cad9480acb1ce85
120 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.

Heuristics 3

  • 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.
  • 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
    • http://files.insightsandilluminations.com/uploads/1/3/1/4/131453045/485ba9ebd953.pdf
    • http://files.nazarenemissions.ca/uploads/1/3/1/3/131380627/vutigerogus.pdf
    • http://files.humanitaseagleeye.org/uploads/1/3/0/9/130969965/kowaliz_zetulubuxo_sibepuga.pdf
    • https://cdn.shopify.com/s/files/1/0427/4411/9462/files/fipetapebotegulib.pdf
    • https://cdn.shopify.com/s/files/1/0432/1447/1330/files/rixoso.pdf
    • https://cdn.shopify.com/s/files/1/0441/1500/1496/files/32148943841.pdf
    • https://cdn.shopify.com/s/files/1/0433/7922/8833/files/78916031345.pdf
    • https://cdn.shopify.com/s/files/1/0434/5951/0424/files/68427129873.pdf
    • https://cdn.shopify.com/s/files/1/0433/3531/9711/files/11003122075.pdf
    • https://cdn.shopify.com/s/files/1/0430/1737/1797/files/74231574291.pdf
    • https://cdn.shopify.com/s/files/1/0433/8266/9464/files/50104335071.pdf
    • https://cdn.shopify.com/s/files/1/0431/4021/9047/files/93355428732.pdf
    • https://cdn.shopify.com/s/files/1/0433/3423/8362/files/tagumisonexurapemexuses.pdf
    • https://cdn.shopify.com/s/files/1/0429/7241/4106/files/susezuvipedutimesa.pdf
    • https://cdn.shopify.com/s/files/1/0438/3680/1184/files/62828868648.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000726e.bin
0ffdfdb1d74fc0f2e6694767085f7211c79a4566b098cf90121c00e581dfea33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x726E 5004 bytes
font_01_sfnt_off0000837c.bin
208c821ddc3cfa16d288bc311f3a3803aac53f0f2f911c79b8b364a02f729547		 pdf-font-stream PDF embedded font (sfnt) at offset 0x837C 9792 bytes

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