Malicious PDF — malware analysis report

Static analysis result for SHA-256 f664bf674963d5be…

MALICIOUS

PDF

45.9 KB Created: 2020-08-27 23:04:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71ffc94c0598ba04f0ffd50a6e47969f SHA-1: ec5a759d1d7649ce482c2b570a8e2df4eeaea3f8 SHA-256: f664bf674963d5bef51352bd0d76b8df4a4cd57b53e402ed0ff1b62f8b431270
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a malicious redirector link disguised as a company profile sample, aiming to trick users into downloading further content. It also features a link farm, suggesting an attempt to manipulate search engine results or distribute malicious files. The presence of a visible LOLBin command execution instruction indicates potential for further malicious activity, such as downloading and executing a second-stage payload.

Heuristics 5

  • 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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.me/pify?keyword=information+technology+company+profile+sample+pdf
    • http://files.holyfamilytopeka.com/uploads/1/3/0/7/130740429/51311a3.pdf
    • http://files.acmdev.net/uploads/1/3/1/4/131406610/sizeludunumu_ratesibovix.pdf
    • http://vetesuka.objectpages.com/uploads/1/3/1/4/131452845/5822004.pdf
    • http://files.sunnex.org/uploads/1/3/1/4/131438155/vepamimigolol_xokomadilusikux.pdf
    • http://guxoxevo.gliba.org/uploads/1/3/1/6/131636755/suvusi.pdf
    • http://guxoxevo.gliba.org/uploads/1/
    • https://cdn.shopify.com/s/files/1/0430/1104/7575/files/bisaduwobefenasifom.pdf
    • https://cdn.shopify.com/s/files/1/0429/5042/6787/files/anteproyecto_de_tesis.pdf
    • https://cdn.shopify.com/s/files/1/0428/3269/1367/files/arabic_language_course_in_urdu_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/6534/3138/files/17097354547.pdf
    • https://cdn.shopify.com/s/files/1/0432/6768/6558/files/bagasse_ash_properties.pdf
    • https://cdn.shopify.com/s/files/1/0446/7880/7705/files/finding_carter_cast.pdf
    • https://cdn.shopify.com/s/files/1/0431/9058/3458/files/vikekum.pdf
    • https://cdn.shopify.com/s/files/1/0430/2992/1943/files/android_webview_error_err_cleartext_not_permitted.pdf
    • https://cdn.shopify.com/s/files/1/0434/8457/7956/files/microsoft_access_2000_free_trial.pdf
    • https://cdn.shopify.com/s/files/1/0447/8572/9685/files/fundamentals_of_computer_applications.pdf
    • https://cdn.shopify.com/s/files/1/0428/1538/9855/files/xusekoferinifajemevewora.pdf
    • https://cdn.shopify.com/s/files/1/0433/2139/3320/files/samuel_beckett_collected_shorter_plays.pdf
    • https://cdn.shopify.com/s/files/1/0431/6469/6738/files/valuzuneton.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_off00007487.bin
53d5f1b2fb73a43497c8bf7505374101e5ce1d84cc455200212970ee1cc522f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7487 5608 bytes
font_01_sfnt_off0000876b.bin
c2dba2ed20d8decd6e9435168697c6af22f687a9ac76569d7eeeaeb7204be216		 pdf-font-stream PDF embedded font (sfnt) at offset 0x876B 10144 bytes

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