Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf87f00940c584e1…

MALICIOUS

PDF

38.5 KB Created: 2020-08-01 22:25:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aaecd8d006d6a60c7b6dcf77d23ff4d2 SHA-1: ca6347e85e972170a93716d2184af01621b8cec6 SHA-256: bf87f00940c584e1542c92c7244295607f60cc911ad80aff555565324f2fb745
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a link farm, with the primary malicious redirector being ttraff.cc. The document body, though heavily obfuscated, contains the target URL, suggesting an attempt to direct users to malicious content. The ML classifier also strongly indicated maliciousness.

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.cc/pify?keyword=lowes+ogdensburg+ny
    • http://files.franklininternationalbeautystore.com/uploads/1/3/1/3/131380485/vedajojanuroso.pdf
    • http://files.kbornsphotography.com/uploads/1/3/1/4/131454114/2045968.pdf
    • http://files.hearttoheartstorytelling.com/uploads/1/3/1/8/131856476/77d9c07626f.pdf
    • http://files.bellacutz.com/uploads/1/3/1/3/131397960/xosinaji-maxusorowin.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tufajotojitumawudawemir.pdf
    • https://cdn.shopify.com/s/files/1/0434/1805/8901/files/nofetisegevuge.pdf
    • https://cdn.shopify.com/s/files/1/0431/7492/0347/files/wipawugawubesizet.pdf
    • https://cdn.shopify.com/s/files/1/0433/4652/6361/files/41779266878.pdf
    • https://cdn.shopify.com/s/files/1/0434/0459/1271/files/kojedepakifowegi.pdf
    • https://cdn.shopify.com/s/files/1/0432/4891/0491/files/nudunedos.pdf
    • https://cdn.shopify.com/s/files/1/0434/3991/5175/files/97666732110.pdf
    • https://cdn.shopify.com/s/files/1/0431/8475/0747/files/lawebisovafoxaleg.pdf
    • https://cdn.shopify.com/s/files/1/0430/7920/5013/files/maxapifevizegawetegupave.pdf
    • https://cdn.shopify.com/s/files/1/0432/6037/9286/files/migetorefuzixoratufona.pdf
    • https://cdn.shopify.com/s/files/1/0430/2045/1997/files/84480426092.pdf
    • https://cdn.shopify.com/s/files/1/0430/9562/1796/files/xujedizelefivenaver.pdf
    • https://cdn.shopify.com/s/files/1/0430/8143/3242/files/wexuwosifetimujuluxakebi.pdf
    • https://cdn.shopify.com/s/files/1/0432/3062/5950/files/75563526259.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_off00004db4.bin
4dd488ef5fef7b39c9669ae067beb3036a06a55ba0cc03bb5a2e1b9b3da4928d
pdf-font-stream PDF embedded font (sfnt) at offset 0x4DB4 4780 bytes
font_01_sfnt_off00005e00.bin
3461be339633f1d4ecc912ec5bd913a2c9a29ccfbb0c11e4708e88429f31bef0
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E00 9648 bytes
font_02_sfnt_off00007eef.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EEF 4324 bytes