Malicious PDF — malware analysis report

Static analysis result for SHA-256 60a66f029ff728a8…

MALICIOUS

PDF

76.2 KB Created: 2020-08-08 01:27:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cacac3ecc0884d4fa082daf3a08eea1c SHA-1: a1a4447c909a23666e3474f4f378069f5519901d SHA-256: 60a66f029ff728a86a264a435f2b5b2c485d17712a164457f11b41c914888c46
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. One critical link redirects to a malicious domain, indicating a phishing or redirection attempt. The document body itself contains garbled text but includes the malicious URL, reinforcing the redirection tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=cassirer+philosophy+of+the+enlightenment+pdf
    • http://files.mrsnoacksclass.com/uploads/1/3/2/6/132681026/nuginukip-notepoxadivusul.pdf
    • http://files.daniel12.com/uploads/1/3/1/1/131164398/giziser.pdf
    • http://files.downingtownswimacademy.com/uploads/1/3/1/4/131453219/b58539fa67b0289.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0437/8856/6680/files/1073114282.pdf
    • https://cdn.shopify.com/s/files/1/0436/3508/1374/files/25829676721.pdf
    • https://cdn.shopify.com/s/files/1/0429/5727/5299/files/vilipetodiv.pdf
    • https://cdn.shopify.com/s/files/1/0431/8766/7104/files/49279094144.pdf
    • https://cdn.shopify.com/s/files/1/0436/9884/7896/files/46953382684.pdf
    • https://cdn.shopify.com/s/files/1/0427/5997/9174/files/metuzupumiwu.pdf
    • https://cdn.shopify.com/s/files/1/0438/3604/7520/files/84079289136.pdf
    • https://cdn.shopify.com/s/files/1/0435/2681/5895/files/sutemexawedudidaluxex.pdf
    • https://cdn.shopify.com/s/files/1/0431/7829/5450/files/pegowo.pdf
    • https://cdn.shopify.com/s/files/1/0438/3490/0637/files/rumulutobugoxuzadev.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/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000e152.bin
5e1fb242dfde7c93a7dd6867fb1b0555e6f3f9156edd0e44691993ee1075efdd		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xE152 29368 bytes
font_00_sfnt_off0000a010.bin
6202a12f16455c9742f3df0f355cdba86cc2663482bcd346304fc000727979dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA010 5368 bytes
font_01_sfnt_off0000b22a.bin
1dba2fe9b09a97179ea5033afeda8d1cebe4ea1838fc69603ad880af37e554f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB22A 15112 bytes
font_03_sfnt_off00011529.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11529 4324 bytes

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