Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd898930aa596cb4…

MALICIOUS

PDF

42.3 KB Created: 2020-08-05 01:01:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ace829f7398cc59a4bc170bc662cc2ae SHA-1: c5c56b8bd914eb815f7cbc77ab1828aac3ff5b4e SHA-256: cd898930aa596cb4453a9ab45e74b1896e7010b2103444d1674e29ea24635724
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lure users into clicking on further malicious links. The document body, though heavily obfuscated, contains text related to Agile project management and includes the malicious URL, suggesting a social engineering pretext. The presence of a large number of embedded links, many pointing to Shopify domains, indicates a link farm strategy to improve search engine ranking and distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=agile+project+management+with+scrum+developer+best+practices+pdf
    • http://files.devonportcomhouse.com/uploads/1/3/1/4/131408100/df88d833b625.pdf
    • http://files.region8so.org/uploads/1/3/2/6/132682833/19245262e29.pdf
    • http://files.techedmn.com/uploads/1/3/1/6/131636712/soxax_tupoluzudaken_babuguva_marunej.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/porovurujapiganipuzul.pdf
    • https://cdn.shopify.com/s/files/1/0432/2122/1533/files/rowabuv.pdf
    • https://cdn.shopify.com/s/files/1/0437/5920/6561/files/jujugezetoder.pdf
    • https://cdn.shopify.com/s/files/1/0437/2309/6216/files/77762668066.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31492874922.pdf
    • https://cdn.shopify.com/s/files/1/0430/7763/2161/files/sofusaretunad.pdf
    • https://cdn.shopify.com/s/files/1/0440/8583/7989/files/barash_anesthesia.pdf
    • https://cdn.shopify.com/s/files/1/0433/6081/3208/files/fusopajivekanerubasove.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nifafujejugafux.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/riginijulu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4573/2007/files/80441556052.pdf
    • https://cdn.shopify.com/s/files/1/0429/1143/2857/files/91782760196.pdf
    • https://cdn.shopify.com/s/files/1/0429/0864/7580/files/8798981467.pdf
    • https://cdn.shopify.com/s/files/1/0428/4488/1059/files/lenobakarizisa.pdf
    • https://cdn.shopify.com/s/files/1/0431/3877/7249/files/13829206645.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_off0000653f.bin
a1304d4a247187bbd5ebd87a1c6f5d4ffbe1640c922e4a4d82eb9d38dcdcb8b4
pdf-font-stream PDF embedded font (sfnt) at offset 0x653F 5924 bytes
font_01_sfnt_off0000795d.bin
3971c9b194aafd78684ac440eeafdfd1a99e9c2c578a37d1a90d2632a706af3b
pdf-font-stream PDF embedded font (sfnt) at offset 0x795D 10052 bytes