Malicious PDF — malware analysis report

Static analysis result for SHA-256 632be3306bc85e4e…

MALICIOUS

PDF

34.0 KB Created: 2020-08-25 00:13:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2364e7035ceef3b48da6a44261437654 SHA-1: bd4c665bb8352a84a9443f125ddd79ffb0b0d6ba SHA-256: 632be3306bc85e4e7d4f291d65521f3c954891da5e7681c66a92193ba3dc6ecb
154 Risk Score

Malware Insights

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

The PDF contains a large number of external links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure related to 'birthday new punjabi song video' and includes the malicious redirector URL. This indicates an attempt to trick the user into visiting a malicious site, likely for phishing or malware distribution.

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/pify?keyword=birthday+new+punjabi+song+video
    • http://files.theadventuresofraz.com/uploads/1/3/2/8/132814427/kaveniz.pdf
    • http://files.climbireland.com/uploads/1/3/2/7/132740480/9519470.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/0310/1863/files/49801384433.pdf
    • https://cdn.shopify.com/s/files/1/0432/5199/0691/files/system_out_println.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94448736580.pdf
    • https://cdn.shopify.com/s/files/1/0434/1999/2222/files/pubevikilex.pdf
    • https://cdn.shopify.com/s/files/1/0464/7691/8934/files/25152070828.pdf
    • https://cdn.shopify.com/s/files/1/0433/2329/3864/files/castbox_premium_mod_apk.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61086590007.pdf
    • https://cdn.shopify.com/s/files/1/0429/2762/0249/files/giramodunumibofasu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3431/1845/files/nowizideviw.pdf
    • https://cdn.shopify.com/s/files/1/0429/1543/0559/files/detar.pdf
    • https://cdn.shopify.com/s/files/1/0437/6068/1111/files/sections_in_markdown_file.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000475c.bin
9878255d033dff4a0ea655806a4a097ebb295fced3f227d92f91e86259957a63
pdf-font-stream PDF embedded font (sfnt) at offset 0x475C 5708 bytes
font_01_sfnt_off00005add.bin
ff1124d037ff014a080c0a13a90f2a8bf3f854d8edb8137f01b867ab24d7df00
pdf-font-stream PDF embedded font (sfnt) at offset 0x5ADD 9548 bytes