Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f378f56fd7e7e84…

MALICIOUS

PDF

53.8 KB Created: 2020-08-30 02:52:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1e8505654acce610a89c94884ae72b2e SHA-1: 0a53bb4eecd9f587f4ce2e88dc63b9b3fe95d24a SHA-256: 7f378f56fd7e7e8434a9bbc40f28c143524303389ef899663e00181666e7a521
154 Risk Score

Malware Insights

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

The PDF contains a link to a redirector service that is flagged as malicious. This link is presented to the user with a lure related to 'minecraft exe google drive', suggesting a phishing or social engineering attempt. The presence of numerous other PDF links, many pointing to benign content, indicates a potential link farm or SEO manipulation tactic to obscure the malicious destination.

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/wix?keyword=minecraft+exe+google+drive
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_0d2c8329fb094d4db01d7011dc740726.pdf
    • https://static.usrfiles.com/ugd/b8c837_1de3566b0fd0421b93de172b59c58feb.pdf
    • https://static.usrfiles.com/ugd/b8c837_b9842a2897bf4bdc9bb74fe7f8ce7dda.pdf
    • https://static.usrfiles.com/ugd/b8c837_3e01101c276c4def90c95f0ac247a265.pdf
    • https://cdn.shopify.com/s/files/1/0431/6590/9143/files/alligation_and_mixture_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/3927/6707/files/32766775116.pdf
    • https://static.usrfiles.com/ugd/accd1f_a9d04a635e8f4d3ba94e6f23925cc328.pdf
    • https://static.usrfiles.com/ugd/b8c837_0019bec7fe5d4706b2cf7941c50487ad.pdf
    • https://cdn.shopify.com/s/files/1/0428/3518/1724/files/31858054820.pdf
    • https://cdn.shopify.com/s/files/1/0438/4414/1218/files/rutixopesofutajuselunosul.pdf
    • https://cdn.shopify.com/s/files/1/0431/6558/1468/files/77070560697.pdf
    • https://cdn.shopify.com/s/files/1/0431/7220/0608/files/la_cimbali_m29_selectron_parts_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/3849/9235/files/35386895806.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_off000094b8.bin
2d8c12bb0500ac5407020cf1363ba0a1b649d8fba4515d3f0bdb10768d41839b
pdf-font-stream PDF embedded font (sfnt) at offset 0x94B8 5144 bytes
font_01_sfnt_off0000a64f.bin
f63da2793fb8ce3ba249f8ce629aca00081633629c39c79e41697def312cbc10
pdf-font-stream PDF embedded font (sfnt) at offset 0xA64F 10668 bytes