Malicious PDF — malware analysis report

Static analysis result for SHA-256 63ab8e6f47e2221b…

MALICIOUS

PDF

45.6 KB Created: 2020-08-07 15:11:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b78464d8947f21f6c290bfb0f14bb05 SHA-1: db9f63ef7edd856cf923ac111f54ed240db735b3 SHA-256: 63ab8e6f47e2221b41f45a2bd67768acd0bc341afe1fda9cc9e19402da83914a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, with the primary link pointing to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though obfuscated, contains references to the malicious URL and other URLs hosted on potentially compromised or malicious infrastructure, suggesting a link farm or redirection scheme.

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=market+analysis+report+sample+pdf
    • http://feditatup.wffanhub.com/uploads/1/3/0/7/130775162/ligebejula_fewupa_pigefaduwaxazim.pdf
    • http://files.unboundtravelers.org/uploads/1/3/2/6/132682335/9103166.pdf
    • http://josumuvum.sahms.net/uploads/1/3/1/4/131437736/904a4522.pdf
    • http://files.brookhillweekdaypreschool.org/uploads/1/3/0/7/130776603/widozimajumasoz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/8561/7570/files/49083676525.pdf
    • https://cdn.shopify.com/s/files/1/0429/3161/7945/files/xumilegisezo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5221/2128/files/79000789316.pdf
    • https://cdn.shopify.com/s/files/1/0431/5519/4011/files/94728361194.pdf
    • https://cdn.shopify.com/s/files/1/0431/0849/9618/files/53916643427.pdf
    • https://cdn.shopify.com/s/files/1/0431/2583/3884/files/wijivavologef.pdf
    • https://cdn.shopify.com/s/files/1/0429/4914/8828/files/14694991903.pdf
    • https://cdn.shopify.com/s/files/1/0430/5921/6537/files/38352401483.pdf
    • https://cdn.shopify.com/s/files/1/0434/9244/2264/files/62265304495.pdf
    • https://cdn.shopify.com/s/files/1/0429/2067/3433/files/pajunowuwododotobunegew.pdf
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/sumejaz.pdf
    • https://cdn.shopify.com/s/files/1/0434/1124/3162/files/jerisirinasepeje.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zupapinited.pdf
    • https://cdn.shopify.com/s/files/1/0430/3428/0087/files/gexorono.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_off00007305.bin
b47e87669ca8a4c1e930b2552082878010fde25d4863805d9783f33367ca5754		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7305 5360 bytes
font_01_sfnt_off00008544.bin
442ff91f84a7800e7bd5ec7f6a570a304dfe31d274798a4fb0130823dcdfdda8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8544 10516 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.