Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f0e49ee2ba85c70…

MALICIOUS

PDF

55.2 KB Created: 2020-08-12 14:10:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61cbf4366435703ade775d11d73af127 SHA-1: 9a28f61ccaf9c66c961c1834da8e47c51d0dbc36 SHA-256: 9f0e49ee2ba85c70e441d53c7c4041f8df204717fd474d500e9d8dbde21d9593
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be the same as the one flagged by the heuristic. This suggests the document's primary purpose is to redirect users to a malicious site, likely for further exploitation or phishing. No scripts were extracted from this sample.

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=asuhan+keperawatan+pada+pasien+hepatoma+pdf
    • http://files.oatsandhoney.org/uploads/1/3/0/8/130813715/3999bc278f.pdf
    • http://files.roejendradesigns.com/uploads/1/3/1/4/131406762/wugagumigejo.pdf
    • http://wisegi.alphaphiomega-betatheta.com/uploads/1/3/1/3/131383483/1933913.pdf
    • http://fufupim.trailtothepeople.com/uploads/1/3/1/8/131871921/30eac7ea.pdf
    • http://files.candyzcandidz.com/uploads/1/3/1/1/131164250/wivogo.pdf
    • https://cdn.shopify.com/s/files/1/0429/6356/6755/files/sugaxilabaxo.pdf
    • https://cdn.shopify.com/s/files/1/0436/5543/0309/files/xujuvozajifiro.pdf
    • https://cdn.shopify.com/s/files/1/0436/3943/9510/files/annihilation_jeff_vandermeer.pdf
    • https://cdn.shopify.com/s/files/1/0430/4489/6917/files/niburuvidajure.pdf
    • https://cdn.shopify.com/s/files/1/0427/9389/4044/files/88256947470.pdf
    • https://cdn.shopify.com/s/files/1/0436/0319/8116/files/morphology_and_anatomy_of_cockroach.pdf
    • https://cdn.shopify.com/s/files/1/0431/1410/2941/files/78964660585.pdf
    • https://cdn.shopify.com/s/files/1/0429/2293/4435/files/96546590537.pdf
    • https://cdn.shopify.com/s/files/1/0437/4636/1505/files/47552353528.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/avery_template_5163.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94662163826.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_off00009989.bin
017b663e429474943ee7ca8616270ba564f7a82c4a5a84b9961f5b84bfa9f180		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9989 5396 bytes
font_01_sfnt_off0000abc4.bin
3c7849b6cf87ed5391d968e359987a8cfe51e28e401d6aa26e5c32f557185c29		 pdf-font-stream PDF embedded font (sfnt) at offset 0xABC4 10404 bytes

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