Malicious PDF — malware analysis report

Static analysis result for SHA-256 93b28a7bdee9fc35…

MALICIOUS

PDF

45.2 KB Created: 2020-08-31 02:13:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ebcf32a5be860dd15fee7ca905e0a6f4 SHA-1: 83b55ca9282ca2a1578a4c57645ee893193c8d84 SHA-256: 93b28a7bdee9fc35a88182101554f0438eca8d514647960a18eba04c7515c6cf
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=mere+peer+ki+gulami+qawwali+mp3+download'. This URL is likely used to redirect users to malicious content. The document also exhibits characteristics of a PDF link farm, with numerous embedded URLs, many pointing to Shopify domains, likely for SEO manipulation to appear legitimate. No scripts were extracted from this sample.

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=mere+peer+ki+gulami+qawwali+mp3+download
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/41448402009.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pidepuwavulosetanujerepub.pdf
    • https://cdn.shopify.com/s/files/1/0440/4379/6645/files/jidugazavewuvejepitalo.pdf
    • https://cdn.shopify.com/s/files/1/0463/9316/3931/files/madufekadotogufezixo.pdf
    • https://cdn.shopify.com/s/files/1/0430/9575/2864/files/tiwifigar.pdf
    • https://cdn.shopify.com/s/files/1/0435/6286/0699/files/3_am_lyrics_matchbox_20.pdf
    • https://cdn.shopify.com/s/files/1/0429/1526/6713/files/brain_teaser_worksheet_for_grade_3.pdf
    • https://cdn.shopify.com/s/files/1/0434/0105/2312/files/jikavovagiwiraworipu.pdf
    • https://static.usrfiles.com/ugd/a86d68_8cd45df800a44e77959deec767b9182d.pdf
    • https://static.usrfiles.com/ugd/b8c837_c687637e74f74d27a788dbd22bed4b5b.pdf
    • https://static.usrfiles.com/ugd/38bf1f_9852d730e19b4262a2025e0b9eab4957.pdf
    • https://cdn.shopify.com/s/files/1/0429/0337/1935/files/90220635346.pdf
    • https://cdn.shopify.com/s/files/1/0432/6981/6478/files/free_movies_mp4_mania.pdf
    • https://cdn.shopify.com/s/files/1/0435/6662/9032/files/jazaxevubabexudep.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062b8.bin
1c190c52f709365759bee8ab6a0b2acf72f956bb417e379210d362573be6fc59
pdf-font-stream PDF embedded font (sfnt) at offset 0x62B8 5552 bytes
font_01_sfnt_off0000759d.bin
0d5537d06e2ffd022ac6f75e85de54c1442cd8cbbc5b86d7a21e659a7e859bf0
pdf-font-stream PDF embedded font (sfnt) at offset 0x759D 10008 bytes
font_02_sfnt_off0000982b.bin
606b28445564797bcb7c7078c322dec7eb33b767db769d851f24ca8adb049e13
pdf-font-stream PDF embedded font (sfnt) at offset 0x982B 4240 bytes