Malicious PDF — malware analysis report

Static analysis result for SHA-256 67eec010cbac508e…

MALICIOUS

PDF

35.5 KB Created: 2020-08-31 21:06:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 905bb177fae7bb3868d8371cb0275982 SHA-1: 2edec89f9770fe303a29e6a160012505505d3235 SHA-256: 67eec010cbac508ec6dcbd9de18d9a9629fb6ebc28226a4ac305992f9879756d
154 Risk Score

Malware Insights

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

The PDF contains a deceptive link to 'https://ttraff.cc/wix?keyword=bharat+pe+apkpure', identified as a malicious redirector. Additionally, it hosts a large number of external PDF links, suggesting a link farm or SEO manipulation tactic. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent. The embedded content, though obfuscated, also contains the malicious URL.

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=bharat+pe+apkpure
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0461/1116/2531/files/vitosesusifugexuzuko.pdf
    • https://cdn.shopify.com/s/files/1/0428/4396/3548/files/52027808623.pdf
    • https://cdn.shopify.com/s/files/1/0431/5866/7430/files/68278213618.pdf
    • https://static.usrfiles.com/ugd/b8c837_7254b13464f7453bb03adde8555a7a0a.pdf
    • https://static.usrfiles.com/ugd/81d6a4_da103b34c85746409cc3f9d5702040a8.pdf
    • https://static.usrfiles.com/ugd/7ff653_71e7cdd3e17e48338925ed70cb551a34.pdf
    • https://static.usrfiles.com/ugd/b8c837_bc102151c145408da4fd1d363b2187d9.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99324429390.pdf
    • https://cdn.shopify.com/s/files/1/0433/1785/4366/files/wovofivudewa.pdf
    • https://cdn.shopify.com/s/files/1/0431/3687/6706/files/allen_bradley_powerflex_400_vfd_manual.pdf
    • https://static.usrfiles.com/ugd/b8c837_fcd7010f44864e0495c381b9c7c8127f.pdf
    • https://static.usrfiles.com/ugd/b8c837_359d602c73aa4c8c9fb2095920338b1d.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_off00004347.bin
3f645060d810dff0064f8dc93094e6c7eac8e411bf69a2ee05257475b449ba4e
pdf-font-stream PDF embedded font (sfnt) at offset 0x4347 4428 bytes
font_01_sfnt_off00005260.bin
396f80dc48c083e1deca8753706d9a18d2c97026321b82aa15b3bb8746c2c3a2
pdf-font-stream PDF embedded font (sfnt) at offset 0x5260 9796 bytes
font_02_sfnt_off00007382.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x7382 4324 bytes