Malicious PDF — malware analysis report

Static analysis result for SHA-256 b18c436c6e976e9a…

MALICIOUS

PDF

40.8 KB Created: 2020-08-05 03:33:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 857c999b47022ab8dd699cf0921ab8c3 SHA-1: 98b2c5cd5b08185b3c44fd4623a936cb2b399ec3 SHA-256: b18c436c6e976e9ab36a0372b90d453ade6c53698d96659158628db507899b47
120 Risk Score

Malware Insights

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

The PDF contains numerous links, including a primary redirector to 'ttraff.cc', which is flagged as malicious. The document body text, though partially garbled, includes keywords like 'Darth plagueis livro pdf download' and references the wkhtmltopdf generator, suggesting a lure to download a PDF. The presence of a mass external PDF link farm further supports the malicious intent of distributing links to potentially harmful content.

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=darth+plagueis+livro+pdf+download
    • http://files.teledrama.org/uploads/1/3/1/4/131407067/dunovo_nigagevedakatob_xabopare_nitidudatowak.pdf
    • http://midekuv.diazpa.com/uploads/1/3/0/7/130775320/3025210.pdf
    • http://navevega.thecenterlifeinbalance.com/uploads/1/3/0/8/130814229/pupajubegafeba-kepolini-bilawe.pdf
    • https://cdn.shopify.com/s/files/1/0430/7881/1810/files/55183974281.pdf
    • https://cdn.shopify.com/s/files/1/0435/8173/5073/files/83830888289.pdf
    • https://cdn.shopify.com/s/files/1/0431/5106/5243/files/xasewereroxoxo.pdf
    • https://cdn.shopify.com/s/files/1/0437/5255/4657/files/26484302010.pdf
    • https://cdn.shopify.com/s/files/1/0435/0545/1174/files/ladevisavoxolabijukof.pdf
    • https://cdn.shopify.com/s/files/1/0429/7015/3113/files/49265938340.pdf
    • https://cdn.shopify.com/s/files/1/0437/0015/8632/files/tabituvisalujugeruri.pdf
    • https://cdn.shopify.com/s/files/1/0435/9267/9582/files/auxiliary_verb_uses.pdf
    • https://cdn.shopify.com/s/files/1/0433/2650/5118/files/97138391234.pdf
    • https://cdn.shopify.com/s/files/1/0433/5170/3706/files/71241339426.pdf
    • https://cdn.shopify.com/s/files/1/0437/8938/5888/files/german_shepherd_training_books.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_off00005e72.bin
46017614b1208fe9a7f1f03fdedec03440b7ed0fdb3b108cee2cb8027aa3dd9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E72 5452 bytes
font_01_sfnt_off00007118.bin
4cb0b020805d9a8b2b1100fc90f07ae767c145a37c8eef8ed1456f0b7d558b8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7118 11320 bytes

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