Malicious PDF — malware analysis report

Static analysis result for SHA-256 1233e3f75e511cde…

MALICIOUS

PDF

51.0 KB Created: 2020-09-07 04:22:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 91ca8a06f0c00e79135872e6e4df27ab SHA-1: c53bd90c9ea65d185b282712b60d65ee6dae14bf SHA-256: 1233e3f75e511cde09f537e6edef3ffe7679f1062011afd30d8a076a39778e53
162 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download lure, which is a common tactic for phishing or malware distribution. The ML classifier strongly indicated maliciousness, and the presence of a redirector URL further supports this. Although no scripts were explicitly extracted, the PDF structure itself facilitates the redirection, likely leading to a malicious payload or phishing page.

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=flowers+name+in+tamil+pdf In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_f337185dd1ec44b28983f4b22a269e09.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a44510_5a420258d78c4448a88b1ca594fc0f74.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e32576_d6f1cbeb7bbc42cea18fd07a471facd4.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/93c935_ed65807f941a42aea45b8fae39fae4de.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2157/4049/files/suxeguf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5747/8809/files/vadi_potta_pulla_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8140/8416/files/boduvabulebunenekewib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2897/1674/files/49217094622.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3380/5471/files/29395570500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7091/4717/files/pte_essay_writing_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/8982/2631/files/salofujabeburesefulok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7221/6483/files/wodutukexegoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8992/9116/files/gerafifozawevowibanijab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5834/8700/files/64272268773.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1658/5379/files/rususu.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005bd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BD3 5232 bytes
SHA-256: 65a79bcd6411ca53cf58c7b229bbf97ef7b373c9400ba379ea7fbe9fb76ce77b
font_01_sfnt_off00006d98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D98 6100 bytes
SHA-256: 38b72eb670122a8f8ebbc4f31a6c7d42b7b208c8e222ea49411c44e7c0f2c1b4
font_02_sfnt_off00007ed8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ED8 14196 bytes
SHA-256: e2d8d31e6b20b82ce110aa5bfd9a899f13d74297cd2b3c13fac366b2b8fc88f7
font_03_sfnt_off0000aab6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAAB6 4780 bytes
SHA-256: 23d7f9437444ee43de869b348681798459a2d1efeed5a8603895a9adf5c31fb7

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