Malicious PDF — malware analysis report

Static analysis result for SHA-256 871ef77445f7d1b4…

MALICIOUS

PDF

41.0 KB Created: 2020-08-01 06:13:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a5847ade92b6b24d948fe2c4bda5c7af SHA-1: 9f56244dfb95f0822ca962f56705f55f29ac7626 SHA-256: 871ef77445f7d1b4cf1e7d533fa21064f2576a396e684fdccfaa270634127dd9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious Link

The PDF contains a link farm and a direct link to a known malicious redirector, indicating a social engineering attack. The document body, though heavily obfuscated, contains text related to Minecraft mods and a URL that aligns with the malicious redirector. The SE_CLICKFIX heuristic suggests the document is designed to trick the user into executing a command, likely to bypass macro restrictions and initiate a download or further compromise.

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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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.ru/pify?keyword=minecraft+super+hero+mod
    • http://files.griffithspe.com/uploads/1/3/1/4/131437599/45c039.pdf
    • http://files.bigpineysincredibulls.com/uploads/1/3/1/0/131070872/bemus.pdf
    • http://files.miguellevy-paintings.com/uploads/1/3/1/3/131384229/memisumogapiviz.pdf
    • https://cdn.shopify.com/s/files/1/0430/3139/6501/files/sotatade.pdf
    • https://cdn.shopify.com/s/files/1/0438/3680/1184/files/miduwigugekuva.pdf
    • https://cdn.shopify.com/s/files/1/0433/0671/3253/files/62083255467.pdf
    • https://cdn.shopify.com/s/files/1/0440/6591/5032/files/lixevogov.pdf
    • https://cdn.shopify.com/s/files/1/0438/2582/3904/files/30671583552.pdf
    • https://cdn.shopify.com/s/files/1/0431/6725/2641/files/72882809823.pdf
    • https://cdn.shopify.com/s/files/1/0431/7957/3414/files/nakazugaravudoram.pdf
    • https://cdn.shopify.com/s/files/1/0430/3316/5986/files/7014600715.pdf
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/41741054683.pdf
    • https://cdn.shopify.com/s/files/1/0431/3900/6618/files/75680597749.pdf
    • https://cdn.shopify.com/s/files/1/0430/8120/3861/files/lezizegalakanaxatusoz.pdf
    • https://cdn.shopify.com/s/files/1/0430/8847/8359/files/rifanewuxefopejopu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0734/3779/files/5636710542.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/letowopebofowebizuwir.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006216.bin
735513e4fef2715388e23cac6294e707285e486a17312e5ca4622a5dc0683729
pdf-font-stream PDF embedded font (sfnt) at offset 0x6216 5368 bytes
font_01_sfnt_off00007438.bin
6614a6cb47df93b504140c4463ff8e0aa49e18049f026ce807b5ba6224efac4a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7438 10444 bytes