Malicious PDF — malware analysis report

Static analysis result for SHA-256 306b36de6bf9387c…

MALICIOUS

PDF

46.5 KB Created: 2020-08-04 01:08:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 09314c189437442b393a95e2a49c87c8 SHA-1: c4dac3e3d312d46a31d2e97a863e07628859fed6 SHA-256: 306b36de6bf9387c775eebe8c4ef346e5ef5fb015cb8beb936474ec8c3ce42b7
128 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'problems on time value of money pdf' and includes the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of numerous PDF links, many hosted on Shopify, indicates a link farm designed to distribute malicious content.

Heuristics 4

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=problems+on+time+value+of+money+pdf
    • http://files.mercaditosustentable.com/uploads/1/3/0/7/130740571/gubesop.pdf
    • http://files.krakenemporium.com/uploads/1/3/1/4/131406849/jetamigexub.pdf
    • http://files.thesagecottage.com/uploads/1/3/1/4/131437532/a46e49f.pdf
    • https://cdn.shopify.com/s/files/1/0430/4352/0666/files/69502762241.pdf
    • https://cdn.shopify.com/s/files/1/0437/2132/6742/files/safolasoruwakijiriwiru.pdf
    • https://cdn.shopify.com/s/files/1/0435/8848/5288/files/you_kick_my_dog.pdf
    • https://cdn.shopify.com/s/files/1/0431/5018/0503/files/27674277035.pdf
    • https://cdn.shopify.com/s/files/1/0431/2753/7828/files/nigufuxazuwizotugozi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6986/6133/files/7023727321.pdf
    • https://cdn.shopify.com/s/files/1/0436/3363/9584/files/gidotumaxipuvogaxubo.pdf
    • https://cdn.shopify.com/s/files/1/0435/5863/3631/files/resenha_do_filme_escritores_da_liberdade.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/12509012650.pdf
    • https://cdn.shopify.com/s/files/1/0434/8477/4552/files/75867564545.pdf
    • https://cdn.shopify.com/s/files/1/0428/1411/1903/files/92324885877.pdf
    • https://cdn.shopify.com/s/files/1/0432/2181/1364/files/nalolirunarolawaja.pdf
    • https://cdn.shopify.com/s/files/1/0431/7259/3832/files/20060002471.pdf
    • https://cdn.shopify.com/s/files/1/0431/4886/9786/files/jimij.pdf
    • https://cdn.shopify.com/s/files/1/0428/8974/0441/files/59736488364.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_off000075fc.bin
d4d6d8598e001ee5f2c04094881e3ed1a14a34799f243325e35edf852457b06e
pdf-font-stream PDF embedded font (sfnt) at offset 0x75FC 5488 bytes
font_01_sfnt_off00008897.bin
20d48de7be3914159f218a0ef4e6bf07d2ae5231ce703d149541aad19f60e788
pdf-font-stream PDF embedded font (sfnt) at offset 0x8897 10780 bytes