Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdb2b7f11f052d17…

MALICIOUS

PDF

52.6 KB Created: 2020-08-01 23:51:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4afa2e3003d4e3961806cfcb5fa2a73f SHA-1: ac32395ec4212c9a0158c998ef3af776905df69d SHA-256: cdb2b7f11f052d17cc4155fa5e1061229bbe9f5da28c1875876aaba1ea076f98
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=vilros+raspberry+pi+user+guide+pdf'. This URL is likely intended to redirect the user to a malicious site. The document also contains a heuristic for a PDF link farm, indicating a large number of outbound links, many hosted on 'cdn.shopify.com'. The document body, though heavily obfuscated, contains the redirect URL, reinforcing the malicious intent.

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=vilros+raspberry+pi+user+guide+pdf
    • http://files.cheshirepool.net/uploads/1/3/2/6/132681307/vikikunugo.pdf
    • http://files.lorialbertdesigns.com/uploads/1/3/1/3/131384286/c0a8102dd3f9d.pdf
    • http://files.retirementtimeline.com/uploads/1/3/2/7/132740285/bakuzenazupoxa.pdf
    • http://files.spookyhousepress.com/uploads/1/3/1/4/131483234/4932242.pdf
    • http://files.midwestgrotto.com/uploads/1/3/2/7/132740250/lanepa.pdf
    • https://cdn.shopify.com/s/files/1/0433/3164/9689/files/sizakikimig.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sekokejeninidifowabofu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5552/1695/files/va_form_10-_10ezr.pdf
    • https://cdn.shopify.com/s/files/1/0431/6292/7253/files/wuzewawapux.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/29878061118.pdf
    • https://cdn.shopify.com/s/files/1/0427/8904/4383/files/53948637898.pdf
    • https://cdn.shopify.com/s/files/1/0449/8885/8536/files/hq_youtube_to_mp3.pdf
    • https://cdn.shopify.com/s/files/1/0431/8419/3697/files/2007518850.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/3218030698.pdf
    • https://cdn.shopify.com/s/files/1/0431/1996/8417/files/69504859498.pdf
    • https://cdn.shopify.com/s/files/1/0432/8790/4411/files/nowewolebepeza.pdf
    • https://cdn.shopify.com/s/files/1/0429/6795/7658/files/wexubuxuba.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_off000082af.bin
60319ec77568639a52f8bc17ced6cf11e65ffbc2437943e49a875a0511e7e930
pdf-font-stream PDF embedded font (sfnt) at offset 0x82AF 5112 bytes
font_01_sfnt_off00009425.bin
5e0b7560262a9d254570cd74fbafb30aa7ebddc22addfe0dac3e129ba5181680
pdf-font-stream PDF embedded font (sfnt) at offset 0x9425 10200 bytes
font_02_sfnt_off0000b6b4.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xB6B4 4324 bytes