Malicious PDF — malware analysis report

Static analysis result for SHA-256 b508e0a4ced8c23b…

MALICIOUS

PDF

46.4 KB Created: 2020-08-16 18:50:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d4cd5387753ddeec9230ff77d297f46 SHA-1: 72ec03c8cd9c20b7c86a67dd36e7498d4cdf716a SHA-256: b508e0a4ced8c23b56b9f155341f514576428190e37d3003c2c431c1403f62f1
120 Risk Score

Malware Insights

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

The PDF file contains a link to a redirector URL, which is a common tactic for phishing and malware distribution. The document body, though heavily obfuscated, contains the same redirector URL. The heuristic firings indicate the PDF is designed as a link farm, likely to obscure the final malicious destination.

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/pify?keyword=karnataka+bhoomi+rtc+online+report
    • http://doninok.manbeni.net/uploads/1/3/2/6/132682883/370648.pdf
    • http://files.dulcimerjim.com/uploads/1/3/1/8/131856134/5959534.pdf
    • https://cdn.shopify.com/s/files/1/0437/9734/8514/files/ayatul_kursi_bangla_text.pdf
    • https://cdn.shopify.com/s/files/1/0430/2995/4721/files/demarilaposugojudod.pdf
    • https://cdn.shopify.com/s/files/1/0430/5823/3493/files/mh_cet_law_2020_previous_year_question_papers.pdf
    • https://cdn.shopify.com/s/files/1/0437/8293/0593/files/tenolokipodajezanurusume.pdf
    • https://cdn.shopify.com/s/files/1/0433/2044/3045/files/6494906246.pdf
    • https://cdn.shopify.com/s/files/1/0432/1722/3840/files/dijozumazofujezamisib.pdf
    • https://cdn.shopify.com/s/files/1/0437/6887/3112/files/doxogomuzumaxanubuwerepab.pdf
    • https://cdn.shopify.com/s/files/1/0431/6010/9210/files/safenefejimupunovevezugut.pdf
    • https://cdn.shopify.com/s/files/1/0437/1690/3080/files/abecedario_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0434/7396/1125/files/gepifokebanibimo.pdf
    • https://cdn.shopify.com/s/files/1/0434/9558/8002/files/sign_adobe_on_iphone.pdf
    • https://cdn.shopify.com/s/files/1/0437/9800/3874/files/59498494528.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/28379980013.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/
    • https://cdn.shopify.com/s/files/1/0437/6887/3112/files/doxogomuzuma

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000775f.bin
640f450fef1ba9721fc8701395957080154caaa2021a5814dc98710ad4de9bbe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x775F 5168 bytes
font_01_sfnt_off000088c2.bin
82d4952ae5bf8989674f1360f75eec1ac329148b050df40f5b6111116f0306ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88C2 10408 bytes

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