Malicious PDF — malware analysis report

Static analysis result for SHA-256 09930afe3772fd3a…

MALICIOUS

PDF

41.5 KB Created: 2020-09-05 03:33:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e907fe02741de03d6efd46859c3819e9 SHA-1: f4c08502752b50d86de92fc0ecf85c8e92694ab1 SHA-256: 09930afe3772fd3adb2855524e3ee46020a7376996b5f89a739b80867aec973b
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, disguised as a video song title. This redirector likely serves as a gateway to further malicious content or malware. The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests an attempt to distribute malicious content widely. No scripts were extracted, but the primary maliciousness stems from the embedded 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.me/pify?keyword=bandook+chalegi+teri+mp4+video+song
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://static.usrfiles.com/ugd/de60da_efcc4324f73346b49cdb72fbf4705d27.pdf
    • https://static.usrfiles.com/ugd/4ae4db_50163def51f240e5a5b820d3ace6a0de.pdf
    • https://static.usrfiles.com/ugd/eda9ba_eec0b60bc6894c7fbed3a7631550e6f9.pdf
    • https://static.usrfiles.com/ugd/ed2d23_ecd29806f56e49be835f0823216928b5.pdf
    • https://static.usrfiles.com/ugd/b8c837_fd1ec1c84f314526b26d0fd9f920fe46.pdf
    • https://static.usrfiles.com/ugd/d01287_bce0094b4070466e833a0fad83c37370.pdf
    • https://static.usrfiles.com/ugd/9b2d9b_1506685e8c5e4df2b00763cb76b1bd5c.pdf
    • https://static.usrfiles.com/ugd/529dbf_964da532af404702835c440a190adc2b.pdf
    • https://static.usrfiles.com/ugd/704566_17ffe9f9d21b460cbfd879579955328a.pdf
    • https://static.usrfiles.com/ugd/405339_3cf65bf308454920bf2d01a2c354c373.pdf
    • https://static.usrfiles.com/ugd/67f5f7_01bc3c02e7c4488e829712754ae5f2f2.pdf
    • https://cdn.shopify.com/s/files/1/0428/5235/2156/files/cannibals_all.pdf
    • https://cdn.shopify.com/s/files/1/0437/7578/7169/files/86636381178.pdf
    • https://cdn.shopify.com/s/files/1/0437/2430/8630/files/69618281465.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/3100392900.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_off00004cf8.bin
3e9251ec77d1904ba92b3d6768df4ffc0608ff5433158d7292221ec197916747		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4CF8 5748 bytes
font_01_sfnt_off00006075.bin
f27b62bdd4b3e94e89fdcd30dda6d776474c0ef47395e9d961dfc7531f8aee3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6075 13868 bytes
font_02_sfnt_off00008b08.bin
03633a17fc360a87366807af6a08f7eb6e554e2586159927f42e1147838878fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B08 3580 bytes

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