Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7edd073b64534db…

MALICIOUS

PDF

44.9 KB Created: 2020-08-11 13:11:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bfa0c19b6d59f774dc94b8f063359861 SHA-1: 3bf75974b962aa95fdce47a429d388e8abe2869a SHA-256: f7edd073b64534dbd039e01db3b9c7e1b862815358bc98f24d53f34274d45aeb
150 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically to 'https://ttraff.com/pify?keyword=adjectives+list+with+pictures+pdf'. The document body, though heavily obfuscated, contains this URL and other links to PDF files hosted on Shopify. This suggests a social engineering attack aiming to trick users into visiting a malicious site under the guise of a helpful document. No scripts were extracted, limiting the analysis of further payload delivery or persistence mechanisms.

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.com/pify?keyword=adjectives+list+with+pictures+pdf
    • http://files.clairesanderson.org/uploads/1/3/2/3/132303205/gemum-sutozefurejik-fefojateru-gatanuvumiselu.pdf
    • http://files.moonlightairfoundation.org/uploads/1/3/1/3/131379567/c7506e54324e.pdf
    • http://xowar.iamrogerwebb.com/uploads/1/3/1/4/131482952/vusoxajuxote_kepezawi_rurilarek_situl.pdf
    • https://cdn.shopify.com/s/files/1/0433/9515/4070/files/xuvarotagigerobosavuzuxo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1570/8577/files/zabonepisebunuxabuxat.pdf
    • https://cdn.shopify.com/s/files/1/0429/7729/6543/files/tumoronexukidiwut.pdf
    • https://cdn.shopify.com/s/files/1/0432/0657/4238/files/ford_555_backhoe.pdf
    • https://cdn.shopify.com/s/files/1/0431/6463/1195/files/11367709590.pdf
    • https://cdn.shopify.com/s/files/1/0428/6133/0598/files/python_remove_html_tags.pdf
    • https://cdn.shopify.com/s/files/1/0431/4326/6458/files/redudojubesekugilumone.pdf
    • https://cdn.shopify.com/s/files/1/0438/6072/1829/files/46330395149.pdf
    • https://cdn.shopify.com/s/files/1/0437/4652/5338/files/behringer_digital_mixer_x32_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/9183/6566/files/31893701751.pdf
    • https://cdn.shopify.com/s/files/1/0434/7671/3637/files/77530870337.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_off0000650d.bin
37a95509258c67dbe8ab64565a82c638e4f8728e2470ac2b09b97feb9b6b1db0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x650D 5248 bytes
font_01_sfnt_off00007701.bin
294bf718cc282c5cfe288e20ae9b2fae171685644dd24d50e04581b8d0c75b1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7701 15628 bytes

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