Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a56412268c5ec6c…

MALICIOUS

PDF

46.4 KB Created: 2020-08-21 03:10:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ad59aad37749ac433de70ef99eaba0e SHA-1: a3b06f8e8178044feee170bc1e3a1958ca6eb3a9 SHA-256: 8a56412268c5ec6c01b62056eff489cf8fe36d9afdb3a3d33ff4ddbc87ded8dc
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link that redirects to malicious infrastructure, masquerading as a betting guide. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this behavior. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources, as indicated by PDF_SEO_LINK_FARM. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to further stages of an attack.

Heuristics 3

  • 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.
  • 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=australian+open+betting+guide
    • http://peniwum.rylandhowardaudio.com/uploads/1/3/0/9/130969336/f925e91.pdf
    • http://files.oldgloryundersiege.com/uploads/1/3/2/7/132740502/wetofokemusinilud.pdf
    • http://riwowidub.honeycreekpuppies.com/uploads/1/3/1/4/131482962/4905965.pdf
    • http://fakux.americanpolicenews.com/uploads/1/3/2/7/132740228/bosofepuvuwezus_kitibemo_surevive_betale.pdf
    • https://cdn.shopify.com/s/files/1/0440/7836/6872/files/96706986098.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4031/files/lotosusegezixi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8347/2802/files/22395501565.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86372263330.pdf
    • https://cdn.shopify.com/s/files/1/0432/8354/6267/files/32235883486.pdf
    • https://cdn.shopify.com/s/files/1/0432/3137/9618/files/sazarusoguwufe.pdf
    • https://cdn.shopify.com/s/files/1/0434/1297/9879/files/43626513801.pdf
    • https://cdn.shopify.com/s/files/1/0431/5460/4198/files/95468674042.pdf
    • https://cdn.shopify.com/s/files/1/0435/2180/2404/files/11627386574.pdf
    • https://cdn.shopify.com/s/files/1/0434/7786/0516/files/gulaxudelunibuxonum.pdf
    • https://cdn.shopify.com/s/files/1/0433/5425/9606/files/2898779558.pdf
    • https://cdn.shopify.com/s/files/1/0434/1268/4967/files/55105290433.pdf
    • https://cdn.shopify.com/s/files/1/0431/2072/2080/files/16978795140.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_off00007512.bin
a40c497eb56d61577c19e7897b239be861eaa4a4f55722268e61647eec9d9c7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7512 5256 bytes
font_01_sfnt_off000086f6.bin
08803ffc25bf7919908fb2eb993a14c3ff2fda2b39e44b83d214408511699f8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86F6 10644 bytes

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