Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc404e3b83db4dec…

MALICIOUS

PDF

68.0 KB Created: 2020-08-14 13:49:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab683cac0be1063e20cf01227b42563e SHA-1: 44e0040096798de469e10e517ae39a39584b9866 SHA-256: cc404e3b83db4dec9864c2b02a3610f965167662f8c76c1425c705cbe291e835
150 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector URL, indicating an attempt to lead the user to a malicious site under the guise of providing a devotional book PDF. The document body itself is heavily obfuscated but contains the malicious URL, reinforcing the lure. The presence of numerous external links, many pointing to Shopify, suggests a tactic to improve search engine ranking for malicious content.

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/wb?keyword=the%20one%20year%20love%20language%20minute%20devotional%20pdf%20download
    • http://bekitage.be-psychology.com.au/uploads/1/3/1/1/131164250/vugolar.pdf
    • http://files.shop.packtenna.com/uploads/1/3/0/7/130775129/2089027.pdf
    • http://files.gcs-fsaa.com/uploads/1/3/1/8/131859993/baxetutegut_lagukone_difafir.pdf
    • http://files.en.associates.artmark.com/uploads/1/3/1/1/131164117/6555385.pdf
    • http://files.keithleykustomz.com/uploads/1/3/0/7/130776749/mororusoxi_sofodajiturafi_nomimeta_pitajo.pdf
    • https://cdn.shopify.com/s/files/1/0437/4809/8209/files/wejiparitoge.pdf
    • https://cdn.shopify.com/s/files/1/0436/5654/4409/files/download_al_quran_standar_indonesia.pdf
    • https://cdn.shopify.com/s/files/1/0432/3255/9263/files/51241489484.pdf
    • https://cdn.shopify.com/s/files/1/0435/7767/1843/files/brand_identity_guidelines_examples.pdf
    • https://cdn.shopify.com/s/files/1/0433/6317/2502/files/ritepufibaw.pdf
    • https://cdn.shopify.com/s/files/1/0440/5461/0070/files/83191670515.pdf
    • https://cdn.shopify.com/s/files/1/0431/2432/6566/files/srimad_bhagavatam_in_gujarati.pdf
    • https://cdn.shopify.com/s/files/1/0431/5637/3659/files/guitar_chords_booklet.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pegumi.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_off0000bf62.bin
ddd33745cb5a2a54df91b9eaa0c60e941078ab0c0db3f89c567eebdfd99a54c6
pdf-font-stream PDF embedded font (sfnt) at offset 0xBF62 5360 bytes
font_01_sfnt_off0000d187.bin
2de29581c535eee015da91b8b0fd44b632557eae8780e97a5261e1f14b85a742
pdf-font-stream PDF embedded font (sfnt) at offset 0xD187 10304 bytes
font_02_sfnt_off0000f49d.bin
8405bb6ca9a6fb718a2e910e1cdde4d74ac2122cab0061dc5f772322db9c7ccd
pdf-font-stream PDF embedded font (sfnt) at offset 0xF49D 4324 bytes