Malicious PDF — malware analysis report

Static analysis result for SHA-256 607e63a5898f2221…

MALICIOUS

PDF

57.1 KB Created: 2020-08-06 07:32:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b19b4aa8b9eea337755191fe82fabe59 SHA-1: d9bf791104f3c7b52602f6f57a23e314245b55df SHA-256: 607e63a5898f22215521781a445a58aa193d62ae9aba6e8c16755ce1772095a7
154 Risk Score

Malware Insights

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

This PDF contains a large number of embedded links, many of which point to other PDFs hosted on Shopify. One of the primary links, https://ttraff.cc/pify?keyword=managerial+functions+of+hrm+pdf, is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body is heavily obfuscated and contains what appears to be junk data, but the embedded links are the primary vector for malicious activity.

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=managerial+functions+of+hrm+pdf
    • http://files.professortruszkowski.org/uploads/1/3/1/3/131382274/5270879.pdf
    • http://files.mooreimprints.com/uploads/1/3/0/7/130775025/56bef0.pdf
    • http://xokapow.themslist.com/uploads/1/3/1/0/131070152/3245329.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/0056/9766/files/vadarubusetutito.pdf
    • https://cdn.shopify.com/s/files/1/0431/0306/0128/files/towarifofaxizufapebatil.pdf
    • https://cdn.shopify.com/s/files/1/0432/8092/4837/files/98079001875.pdf
    • https://cdn.shopify.com/s/files/1/0428/2010/8455/files/96972093377.pdf
    • https://cdn.shopify.com/s/files/1/0432/0201/9487/files/verekaduv.pdf
    • https://cdn.shopify.com/s/files/1/0428/3885/1751/files/80937709968.pdf
    • https://cdn.shopify.com/s/files/1/0430/4742/0066/files/deren.pdf
    • https://cdn.shopify.com/s/files/1/0434/1311/0951/files/revised_common_lectionary_year_b.pdf
    • https://cdn.shopify.com/s/files/1/0433/7244/5854/files/78129006867.pdf
    • https://cdn.shopify.com/s/files/1/0429/7257/7946/files/1400940608.pdf
    • https://cdn.shopify.com/s/files/1/0440/5755/9190/files/just_already_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0438/0898/1152/files/64434424930.pdf
    • https://cdn.shopify.com/s/files/1/0428/3128/2335/files/vehicle_blackbox_dvr_manual_english.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009312.bin
254e7cb9422ec286e2dac0390900d2a1a972f3a1ec10c202ae366753bf6fea17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9312 5456 bytes
font_01_sfnt_off0000a56d.bin
fe68bb03b9e3fd337e872445248080f017c39d3c746b45450bdadf6e0d03feff		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA56D 10436 bytes
font_02_sfnt_off0000c900.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC900 4324 bytes

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