Malicious PDF — malware analysis report

Static analysis result for SHA-256 318fe4d83b4c3274…

MALICIOUS

PDF

36.5 KB Created: 2020-08-30 12:01:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d32cfb1440fb5d66a9c434e4bbc1f40 SHA-1: 40a3e6cf15630c50dbb1287e3dc581d521bb0e2f SHA-256: 318fe4d83b4c3274f69f997c297089d9a41667d2ee49f7b58bd4e47ef7a9cafc
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, includes the URL that triggered the malicious redirector heuristic. This suggests an attempt to direct users to malicious infrastructure, likely for phishing or malware distribution. The presence of many Shopify links, while mostly benign, contributes to the overall SEO link farm characteristic.

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.com/wix?keyword=la+aldea+global+noam+chomsky+pdf
    • https://cdn.shopify.com/s/files/1/0430/7963/1012/files/6984539838.pdf
    • https://cdn.shopify.com/s/files/1/0433/3384/5150/files/guzajedimujitaba.pdf
    • https://cdn.shopify.com/s/files/1/0431/0165/1105/files/chain_rule_worked_examples.pdf
    • https://cdn.shopify.com/s/files/1/0431/0515/7284/files/flawed_dogs.pdf
    • https://cdn.shopify.com/s/files/1/0429/2630/9535/files/rimerafogenawadul.pdf
    • https://cdn.shopify.com/s/files/1/0428/5743/1196/files/buturusavasetidivoxugu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5469/3541/files/muwaxotizara.pdf
    • https://cdn.shopify.com/s/files/1/0469/0522/9474/files/75383195608.pdf
    • https://cdn.shopify.com/s/files/1/0438/3745/6534/files/35659228940.pdf
    • https://cdn.shopify.com/s/files/1/0430/8864/2197/files/26323018066.pdf
    • https://static.usrfiles.com/ugd/0aab01_30194413f33b43759c15e5fd316d2f43.pdf
    • https://static.usrfiles.com/ugd/b8c837_c60a33eac6584991969a75197cdb0190.pdf
    • https://static.usrfiles.com/ugd/b8c837_7e25e3486ca94c258ba1421874a4e8f6.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000043e9.bin
782ab5fc7914f4210ede1915f2ba8760f9f31e9e6a4220269f324cf0500cafc5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x43E9 5380 bytes
font_01_sfnt_off00005608.bin
a817994697da709a5d0abcd9deacf95bf9af0ee60336a0493f889dd121f3c674		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5608 9672 bytes
font_02_sfnt_off00007733.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7733 4324 bytes

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