Malicious PDF — malware analysis report

Static analysis result for SHA-256 a80e8a67acf0153c…

MALICIOUS

PDF

49.0 KB Created: 2020-07-22 16:52:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc2ee58599c999aa2d2246b7987a9397 SHA-1: ecea288bf35c8d9098fcb66913d9bacd15cbcf25 SHA-256: a80e8a67acf0153c8e5706ca7697cba95cfc22ad40153cc3c13cbdaf5e4709d0
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, a technique often used to redirect users to malicious sites. One such link points to a known malicious redirector. The document body, though heavily obfuscated, appears to be related to a 'product feasibility analysis', suggesting a lure to disguise the malicious intent. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.ru/wb?keyword=product%20feasibility%20analysis%20pdf
    • http://files.evangeliodeamor.org/uploads/1/3/1/4/131406841/fomatorese_pupiwarili.pdf
    • http://files.jaramilyn.com/uploads/1/3/1/4/131437005/jixorozuge-wukekijodulavuj-sifetojadug-vonesupakinalel.pdf
    • http://files.noblefrenchies.com/uploads/1/3/1/6/131637072/tusefuweweze.pdf
    • https://cdn.shopify.com/s/files/1/0432/3213/3278/files/futaxego.pdf
    • https://cdn.shopify.com/s/files/1/0432/7122/5494/files/kutamu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3945/7431/files/3717908468.pdf
    • https://xejolaxutibu.files.wordpress.com/2020/06/37022212790.pdf
    • https://pimiwefenafi.files.wordpress.com/2020/07/fosalobakit.pdf
    • https://rotibokagi.files.wordpress.com/2020/07/2550597782.pdf
    • https://fawexofomo.files.wordpress.com/2020/07/liwaxap.pdf
    • https://wetididi.files.wordpress.com/2020/07/52767125361.pdf
    • https://cdn.shopify.com/s/files/1/0429/5252/3929/files/devagowoseta.pdf
    • https://cdn.shopify.com/s/files/1/0432/6028/0982/files/44834660673.pdf
    • https://cdn.shopify.com/s/files/1/0434/6822/6725/files/26338118245.pdf
    • https://cdn.shopify.com/s/files/1/0432/9802/9733/files/77850687297.pdf
    • https://cdn.shopify.com/s/files/1/0430/4027/6642/files/79919588296.pdf
    • https://cdn.shopify.com/s/files/1/0430/9850/5369/files/fevulixesatesejeroguva.pdf
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/jonenibuposikide.pdf
    • https://cdn.shopify.com/s/files/1/0435/5178/5109/files/jolujatubugab.pdf
    • https://cdn.shopify.com/s/files/1/0436/1709/1744/files/lofurabis.pdf
    • https://cdn.shopify.com/s/files/1/0435/5493/0839/files/sudifaf.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/
    • https://pimiwefenafi.files.wordpress.com/2020/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008046.bin
acdcfbe75a4abbbdfce5b93c8912696a982342974a6f4ce42d2a9b72ebbc77eb
pdf-font-stream PDF embedded font (sfnt) at offset 0x8046 5272 bytes
font_01_sfnt_off00009239.bin
d5023374821059a2010ffd52301016a416c548bca2361c4caefd465d29fa6965
pdf-font-stream PDF embedded font (sfnt) at offset 0x9239 10488 bytes