Malicious PDF — malware analysis report

Static analysis result for SHA-256 60be88e68d6d2b7e…

MALICIOUS

PDF

41.1 KB Created: 2020-08-24 17:51:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5df75d98a5885fe8a06fd0ae3c59fd89 SHA-1: eb7acfcf93bb3ca26c66840b1195e063c28a4f15 SHA-256: 60be88e68d6d2b7e9ebc6a4cab4d8a44c029da931e119724b8bc71c917b4e39e
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is a strong indicator of malicious intent. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm designed to obscure the true destination or to appear legitimate. While no scripts were extracted, the PDF structure and embedded URLs point towards a phishing or redirection attempt, likely delivered as a spearphishing attachment.

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.ru/pify?keyword=bernina+embroidery+software+6
    • http://xakab.tcmrestoration.net/uploads/1/3/0/8/130874633/vetopinuwuvezon.pdf
    • http://files.colemansmoll.com/uploads/1/3/1/8/131857114/0df0a1c49.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/27590830609.pdf
    • https://cdn.shopify.com/s/files/1/0433/7369/1045/files/hunter_bis_classic_wow.pdf
    • https://cdn.shopify.com/s/files/1/0440/1269/9798/files/48071218088.pdf
    • https://cdn.shopify.com/s/files/1/0434/4011/1782/files/insertional_achilles_tendonitis_treatment_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zosogorimojafi.pdf
    • https://cdn.shopify.com/s/files/1/0432/0857/3091/files/arbol_de_decisiones_ejemplos.pdf
    • https://cdn.shopify.com/s/files/1/0434/0996/5212/files/act_sample_tests.pdf
    • https://cdn.shopify.com/s/files/1/0432/0470/6464/files/lipid_metabolism_notes.pdf
    • https://cdn.shopify.com/s/files/1/0437/5586/4215/files/timeline_slide_template_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/5201/4495/files/39603273293.pdf
    • https://cdn.shopify.com/s/files/1/0431/6885/8280/files/kujuraserefu.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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061e5.bin
818d99b42b040a0d1ebd52980b3ee050d47bca15542c82eaaad03e499303e018
pdf-font-stream PDF embedded font (sfnt) at offset 0x61E5 5560 bytes
font_01_sfnt_off000074c4.bin
730a91a0bacae10f51cccfd5adbf7872f47cbc40a782b92e3955b4174afd4548
pdf-font-stream PDF embedded font (sfnt) at offset 0x74C4 10336 bytes