Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d15d911ccf5e9f6…

MALICIOUS

PDF

42.3 KB Created: 2020-08-23 19:23:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e45d7cb19b2aa1e7bd142a027d68124 SHA-1: c86dd46a030872ac68b85113e510f44d91c4d869 SHA-256: 9d15d911ccf5e9f6d4679d8f018a8201706ba0d360d16f7f591cdb88b665acf7
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to ttraff.ru. The document body, though partially corrupted, contains text related to 'Video maker windows 10' and the malicious URL, suggesting a lure. The PDF also contains a large number of external links, many hosted on Shopify, which is indicative of a link farm used for SEO poisoning or to obscure the final malicious destination. The primary malicious IOC is the redirector URL.

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.ru/pify?keyword=video+maker+windows+10
    • http://rebezaw.kdsgiftboutique.com/uploads/1/3/0/9/130969953/xedoforod.pdf
    • http://files.pentonparkbrewery.com/uploads/1/3/1/6/131606807/890001bbe2.pdf
    • http://files.atwbswimming.com/uploads/1/3/0/7/130775712/7598522.pdf
    • http://ledifaro.simplycreativetreasures.com/uploads/1/3/1/6/131606271/25a91937a.pdf
    • http://files.hotelindasuites.com/uploads/1/3/1/4/131483249/8112126.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32150460784.pdf
    • https://cdn.shopify.com/s/files/1/0435/7623/0046/files/garageband_11_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/1236/6231/files/38265943040.pdf
    • https://cdn.shopify.com/s/files/1/0462/7690/3061/files/dominican_republic_history.pdf
    • https://cdn.shopify.com/s/files/1/0432/8570/8953/files/section_21_housing_act_1988.pdf
    • https://cdn.shopify.com/s/files/1/0427/3229/0215/files/20311364833.pdf
    • https://cdn.shopify.com/s/files/1/0429/4115/3439/files/2_file_jadi_satu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2762/0249/files/wowebaw.pdf
    • https://cdn.shopify.com/s/files/1/0433/3905/5253/files/wogamidimokinev.pdf
    • https://cdn.shopify.com/s/files/1/0435/5771/6119/files/zipomevab.pdf
    • https://cdn.shopify.com/s/files/1/0434/1504/4245/files/english_dictionary_book_app.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_off000068c5.bin
af9bef1b0535e9ffdd74c329405a647f8b37531449dd3ad7a2de89f7fe4265ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68C5 5252 bytes
font_01_sfnt_off00007aa2.bin
cb5b4edf0f3b7e2988a1862f4034f5ef3e9b7a6c02556726083c00c4dfccada9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AA2 9980 bytes

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