Malicious PDF — malware analysis report

Static analysis result for SHA-256 def5e11ae7fc6f1f…

MALICIOUS

PDF

61.8 KB Created: 2020-08-09 13:55:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2e54259484596da9aaf30ee0315e368d SHA-1: d34ab51abd1868da8c74866e563458835fe361e4 SHA-256: def5e11ae7fc6f1f2d7172b51f70dc47731dddec89047090faca2be1eacc07c3
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

This PDF file contains a large number of embedded links, many of which point to external websites. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=heart+circulation+system+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect users to malicious sites, likely for phishing or malware distribution. No scripts were extracted from this sample.

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.com/pify?keyword=heart+circulation+system+pdf
    • http://files.worldofmicrobiology.com/uploads/1/3/0/7/130740323/pagas_jerovutu_nakemosinelazib.pdf
    • http://files.reachub.org/uploads/1/3/1/4/131452861/1442670.pdf
    • http://ketowemem.290pleasantstu313.com/uploads/1/3/1/4/131407227/69b88c51701288.pdf
    • http://tabibixo.redroostergrill.com/uploads/1/3/2/7/132740405/5391850.pdf
    • http://files.mycoachblack.net/uploads/1/3/1/4/131437873/9e328759.pdf
    • https://cdn.shopify.com/s/files/1/0437/7745/8334/files/18224618140.pdf
    • https://cdn.shopify.com/s/files/1/0434/7327/2992/files/futolopamuxupuzil.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lejozusuxawunulimedobina.pdf
    • https://cdn.shopify.com/s/files/1/0435/2730/7416/files/girugasiwapep.pdf
    • https://cdn.shopify.com/s/files/1/0431/1656/0550/files/42831067003.pdf
    • https://cdn.shopify.com/s/files/1/0437/7142/9015/files/accountancy_book_class_12_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/4285/6344/files/72910328733.pdf
    • https://cdn.shopify.com/s/files/1/0437/1313/4757/files/rhino_5_free_download_with_crack.pdf
    • https://cdn.shopify.com/s/files/1/0429/0769/7305/files/94916856232.pdf
    • https://cdn.shopify.com/s/files/1/0448/4648/1570/files/objective_c_url_parameters_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0427/5588/3175/files/titijaxijezota.pdf
    • https://cdn.shopify.com/s/files/1/0432/0477/1999/files/sebeximesanuxede.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_off0000b3a1.bin
94f8d00da9154cf540e54404a39f9d197c1315bc6762cd852c443f013345117e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB3A1 5364 bytes
font_01_sfnt_off0000c5d2.bin
cd60779b57036f3a9e939a62ff580a2a0565edff24cefb5f3ec63124be76c511		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC5D2 10608 bytes

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