Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed0a582bf9d9961e…

MALICIOUS

PDF

56.9 KB Created: 2020-08-03 23:50:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bde28161c4d637c216a91b20059251a3 SHA-1: c804ccc56fe69d400540942ebf20a9e5406b8a3b SHA-256: ed0a582bf9d9961e26a350f7fd6f0898890afb76899636b9bc6435aac43e1651
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to a known malicious URL. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=que+es+diversidad+genetica+pdf', which is also present in the heuristics. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many pointing to shopify.com, suggesting an attempt to disguise malicious activity within a large volume of seemingly benign links. The ML_NYX_PDF_MALICIOUS classifier also strongly flagged this PDF.

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=que+es+diversidad+genetica+pdf
    • http://files.ladyslipperstudios.com/uploads/1/3/0/7/130775490/desus-vagowikawituvul-newopanexi-vukoma.pdf
    • http://fupodujot.jolipbooth.com/uploads/1/3/1/4/131453645/guvamitubegakivu.pdf
    • http://files.cre8mag.com/uploads/1/3/1/8/131856380/garetoxixixozut.pdf
    • https://cdn.shopify.com/s/files/1/0428/9495/0556/files/73233434369.pdf
    • https://cdn.shopify.com/s/files/1/0427/8904/4383/files/nekuzitotukoxidosawobi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1387/3569/files/nemixuzenakozopusef.pdf
    • https://cdn.shopify.com/s/files/1/0428/4937/0268/files/712985784.pdf
    • https://cdn.shopify.com/s/files/1/0434/4764/8406/files/bigobuwarejido.pdf
    • https://cdn.shopify.com/s/files/1/0434/3191/9765/files/experiments_in_digital_fundamentals_10th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/8273/5006/files/95431344696.pdf
    • https://cdn.shopify.com/s/files/1/0433/2794/6904/files/61131082743.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84113106953.pdf
    • https://cdn.shopify.com/s/files/1/0434/0462/4021/files/wusirini.pdf
    • https://cdn.shopify.com/s/files/1/0432/1034/2564/files/viluserid.pdf
    • https://cdn.shopify.com/s/files/1/0435/9438/3522/files/96759962904.pdf
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/xekugixisevovis.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_off00009056.bin
12dd0dbd02523610a9e95df9cb805086cf00dbbb132f11e718b45d69f3caeec3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9056 5184 bytes
font_01_sfnt_off0000a20b.bin
829c685257ec0847c8cc0485f1182640dc0173d3c19456d798bd3d8b37dd9c4c
pdf-font-stream PDF embedded font (sfnt) at offset 0xA20B 11164 bytes
font_02_sfnt_off0000c672.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xC672 4324 bytes