Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d632d82f3fc8e7d…

MALICIOUS

PDF

95.4 KB Created: 2020-09-06 06:04:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 11f81d69aa28aef0096f3501462ae78d SHA-1: 86fabf5a8f38e900e727371c43bda58f32a9ff44 SHA-256: 5d632d82f3fc8e7d910d1b9abc280e34dada127f0501cede0992abbd2ebaae2e
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious domain, disguised as information about Canadian visa formats. This is supported by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic and the embedded URL. The PDF also hosts a large number of external links, suggesting a link farm for SEO manipulation, as indicated by the 'PDF_SEO_LINK_FARM' heuristic. No scripts were extracted, but the presence of malicious links points to a phishing or scam attempt.

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/wix?keyword=canada+visa+number+format
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.opentle.org
    • https://cdn.shopify.com/s/files/1/0448/2488/7456/files/permanent_magnet_brushless_dc_motor_drives_and_controls.pdf
    • https://cdn.shopify.com/s/files/1/0430/5354/7677/files/31283874532.pdf
    • https://cdn.shopify.com/s/files/1/0432/1126/0062/files/63491016775.pdf
    • https://cdn.shopify.com/s/files/1/0432/5349/8019/files/dietoterapia_cirrose_hepatica.pdf
    • https://cdn.shopify.com/s/files/1/0432/7384/6952/files/revilikufuxatu.pdf
    • https://static.usrfiles.com/ugd/8e66a5_c5546aeb3bcf4be68b45bbda516d6206.pdf
    • https://static.usrfiles.com/ugd/8d57bd_313b4fe980d64dcfa72167bfffaff57b.pdf
    • https://static.usrfiles.com/ugd/b8c837_072b4975e4c64ac4a3ebded16938a1e0.pdf
    • https://static.usrfiles.com/ugd/b8c837_3613a9d2513a4ce6bbefef911945bafe.pdf
    • https://cdn.shopify.com/s/files/1/0431/4886/9789/files/gudob.pdf
    • https://cdn.shopify.com/s/files/1/0465/4995/8814/files/34117229162.pdf
    • https://cdn.shopify.com/s/files/1/0436/6050/9337/files/43291083696.pdf
    • https://cdn.shopify.com/s/files/1/0433/7149/5574/files/angularjs_c_mvc_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0440/5323/3814/files/12th_time_table_2019_up_board.pdf
    • https://static.usrfiles.com/ugd/b8c837_a90dd225c32e41e8af431106ff17fda3.pdf
    • https://static.usrfiles.com/ugd/7f46b5_502c53dba94849f1a51f7c71742bb26a.pdf
    • https://static.usrfiles.com/ugd/b8c837_cd34d722915e4ffc92bdf8ad836feb14.pdf
    • https://static.usrfiles.com/ugd/f84671_b5bc13c46ee84c7faa268a37bd31d998.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/
    • http://scripts.sil.org/OFL
    • http://www.gnu.org/licenses/gpl.html

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011749.bin
b72557c9b1dfdf9af7f033b07753bb5bfd907d17161d171daee0827e89b6b801		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11749 5124 bytes
font_01_sfnt_off00012894.bin
1640fd32304170638016e5f698c224b2630fec06af0c09fa4402e242fbb745fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12894 8436 bytes
font_02_sfnt_off0001402b.bin
e0bfe78f2449e3dd3ec4ecd518b265ade95d6d01ba372c2114a9babfde00fff5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1402B 15092 bytes

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