Malicious PDF — malware analysis report

Static analysis result for SHA-256 65556f6c1217be73…

MALICIOUS

PDF

54.0 KB Created: 2020-08-25 01:20:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 08397812914638d389e71b9e32a2dea1 SHA-1: e3ef5bb062079ff9ff5114437d8267dab351ff85 SHA-256: 65556f6c1217be73fd4b6d474ba5620b0314e1ebd6e9f74fbb9770ea3c3b5887
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple links, one of which, 'https://ttraff.cc/pify?keyword=auto+reply+for+whatsapp+pro', is identified as a malicious redirector. The document body also contains this URL, suggesting a lure to trick users into downloading potentially malicious content. The presence of numerous external PDF links further indicates a link farm or distribution mechanism for malicious files.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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
  • 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=auto+reply+for+whatsapp+pro
    • http://files.futurepoint4business.com/uploads/1/3/0/7/130776828/0244d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/8706/7291/files/35736227733.pdf
    • https://cdn.shopify.com/s/files/1/0432/1679/7855/files/munokili.pdf
    • https://cdn.shopify.com/s/files/1/0427/9749/8535/files/77024132748.pdf
    • https://cdn.shopify.com/s/files/1/0430/8929/7568/files/doweti.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/miveguxuxububepevomozit.pdf
    • https://cdn.shopify.com/s/files/1/0464/9805/4312/files/30887991724.pdf
    • https://cdn.shopify.com/s/files/1/0434/3077/2901/files/62069671191.pdf
    • https://cdn.shopify.com/s/files/1/0437/5996/0218/files/acet_2018_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0430/7438/8119/files/8965042362.pdf
    • https://cdn.shopify.com/s/files/1/0454/4213/8262/files/nuvedapezajim.pdf
    • https://cdn.shopify.com/s/files/1/0453/6067/7019/files/black_ball_pool_rules.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/
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060bb.bin
0eac1552a6a0cc8d6d43e14f5c157d052ff2bf21460314f67a2c213e0a454e63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60BB 6744 bytes
font_01_sfnt_off000071a2.bin
66a5802f5439bbff6a8f392c63d8001c0735c3491bbac2b2432c340910c31dbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71A2 5172 bytes
font_02_sfnt_off00008346.bin
7a2338c4285244161de6bda6f447d8838b57a02d8cee991dad3a0dd5c5edaf38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8346 2352 bytes
font_03_sfnt_off00008dc6.bin
b3e5dd232b34f76903b3b44c9a3d50bd158f60dd31115039bc67a7925816d680		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DC6 10956 bytes
font_04_sfnt_off0000b349.bin
9f650169421b0b7087dd31af68adb40091046a2bb8e16b0442b6a694d872da2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB349 16204 bytes

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