Malicious PDF — malware analysis report

Static analysis result for SHA-256 24cb28eb909567e3…

MALICIOUS

PDF

45.2 KB Created: 2020-07-10 01:03:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 25c1d28540e991773bc58ecce6e2725e SHA-1: 25da00f91ecd3f26755cd6c7bd644e41284029f0 SHA-256: 24cb28eb909567e3c7a1e187a5e91440ea79dcaff5b3b4bcf8a3bc291db25287
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, including a critical redirector link to 'ttraff.cc'. The document body text, though obfuscated, contains the same URLs, suggesting a lure to trick the user into clicking them. The presence of a large number of external PDF links also indicates a link farm strategy. The ML classifier strongly flagged this PDF as malicious.

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/wb?keyword=wet%20signature%20in%20pdf
    • http://files.jackdogproductions.com/uploads/1/3/1/3/131383575/rufumururagetof.pdf
    • http://files.ajehman.com/uploads/1/3/1/4/131406049/9834488bc724c.pdf
    • http://files.everthingtrend.com/uploads/1/3/1/8/131871850/1123d21ee97a7.pdf
    • http://files.vesselartsco.com/uploads/1/3/1/4/131406379/biligo_kojatadukonuzaw.pdf
    • http://files.moonlitglo.com/uploads/1/3/0/7/130739669/litokanogukenos_rokasojuro_rekebujilavudo.pdf
    • http://files.6yedollglobal.com/uploads/1/3/0/7/130739836/larolorimutiloxil.pdf
    • http://files.betsyleebaileymusic.com/uploads/1/3/2/7/132740564/kimamixorofitu-mizuziximexaxe-gikagurafe-zadawo.pdf
    • http://files.jessicainnes.co.uk/uploads/1/3/1/1/131163723/firago-xudubajiwari.pdf
    • https://rivadexas487092582.files.wordpress.com/2020/06/22940904330.pdf
    • https://ripodokudiwi.files.wordpress.com/2020/07/voxuxozikodutibanepogew.pdf
    • https://mebanome.files.wordpress.com/2020/07/74559549347.pdf
    • https://sabepata.files.wordpress.com/2020/06/46783391890.pdf
    • https://nobijip.files.wordpress.com/2020/06/45018746436.pdf
    • https://pepifalako.files.wordpress.com/2020/07/56061590891.pdf
    • https://fugezatevuda.files.wordpress.com/2020/06/3633520407.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93861148098.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/96258555683.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/85986419962.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wajumibuxup.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/97046042130.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sivezijikok.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41326774972.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_off00007314.bin
2ef56ad2e10777ef1313da07fbc7f67e54fae0dfffead5fb0b5dee77154d7c1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7314 4960 bytes
font_01_sfnt_off00008408.bin
ba529191f0545e7139f3c4fb33e0d94a823e0895a3cfb11a47c4704a7201d795		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8408 10508 bytes

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