Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f100afa917d596c…

MALICIOUS

PDF

38.4 KB Created: 2020-08-07 09:23:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ddc639b2468d394499de9cf9568035b5 SHA-1: e4d5129abfcc657d389c420ce169d5c132cac3cb SHA-256: 9f100afa917d596c95aec2e0adf7864ed1f308810f0d9da987abd879c7cc7c27
152 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic identifying a link to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=beaconmedaes+zone+valve+box+pdf'. The document body, though heavily obfuscated, also contains this URL and numerous other links hosted on cdn.shopify.com and other domains, suggesting a link farm or redirection scheme. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to lead users to harmful content.

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=beaconmedaes+zone+valve+box+pdf
    • http://files.evasustar.com/uploads/1/3/1/1/131164204/gigukamalirupud.pdf
    • http://files.denbighlocksmiths.com/uploads/1/3/0/7/130776449/rofevifatunop.pdf
    • http://files.alpsed.online/uploads/1/3/0/7/130776591/3300026.pdf
    • https://cdn.shopify.com/s/files/1/0434/0423/0805/files/nakukezudim.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/52244446143.pdf
    • https://cdn.shopify.com/s/files/1/0431/6092/8405/files/kituzaseraxapa.pdf
    • https://cdn.shopify.com/s/files/1/0431/3900/6632/files/18986453345.pdf
    • https://cdn.shopify.com/s/files/1/0434/9257/3336/files/sosixunuxozuludoroxax.pdf
    • https://cdn.shopify.com/s/files/1/0432/0496/8603/files/kitozobenilo.pdf
    • https://cdn.shopify.com/s/files/1/0437/9816/7713/files/google_sheets_merge_cells.pdf
    • https://cdn.shopify.com/s/files/1/0427/4293/9814/files/tuvikajijozujidi.pdf
    • https://cdn.shopify.com/s/files/1/0438/9886/3771/files/folic_acid_foods_list_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0429/7896/7703/files/23980471308.pdf
    • https://cdn.shopify.com/s/files/1/0433/1615/0427/files/xoxizemofi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000043d7.bin
a24d8f315f44c5f7811cae55a10476e8461218a8541508c6c4fae99f26f2ffdd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x43D7 5572 bytes
font_01_sfnt_off000056c7.bin
ca9c4f1d98c6595f7af052fde1bcb5319e69a868a1457491616a4085b1523400		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56C7 9420 bytes
font_02_sfnt_off00007731.bin
fd2e26fc2f803dcf07b0b58048f95075aa07ade0877caf7b60c502d13bd4189b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7731 16196 bytes

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