Malicious PDF — malware analysis report

Static analysis result for SHA-256 36034b7c048d8bcd…

MALICIOUS

PDF

40.0 KB Created: 2020-09-02 21:02:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 97b5994472c5f3f2fce10f3b7a767182 SHA-1: bb7c312cc3f0e961f3999fd4a776787d84414cb7 SHA-256: 36034b7c048d8bcda597dce1fc4c64affcc6cd3f60e59320784d092cd2c10b49
154 Risk Score

Malware Insights

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

This PDF document contains a link farm with numerous embedded URLs, including a primary malicious redirector. The document's content, though obfuscated, appears to be a lure for antivirus software, directing users to the malicious URL. The ML classifier strongly indicated maliciousness, and the PDF structure itself contains multiple links designed to lead users to external sites.

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.com/wix?keyword=antivirus+apk+for+computer In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3420/6631/files/7007700473.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0466/4259/3957/files/22677216212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8588/9689/files/kanujomopufume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7256/0031/files/ghost_recon_breakpoint_beta_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6885/8272/files/20573143307.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/275374_d2c881d0df4b49d18907ae1f2499e461.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/576447_1140721ad7344cbeb0f350befc32ffe4.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/7f46b5_4b425f3ff65d4a26a3474d805739c308.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/455f95_8b00de7c6dbc40a6a4ade4c4fb85566c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0c41e7_aeb8779aa80141e1afcd71a2f1f5f896.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2768/5798/files/7291456479.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6991/4782/files/django_html_template_if_statement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6086/2882/files/tepepezelifuno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0470/9744/6550/files/dikamapise.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F73 5240 bytes
SHA-256: 63e2f1fc84a30b003879bb5fe8aa6874609b3809137b790d288a6e138139d2c9
font_01_sfnt_off00007140.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7140 10088 bytes
SHA-256: bbef558e5b4c147d4d7490b8073a1716af512a93192a6daac36595c9e63c587a

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