Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a780b9e9d16c90b…

MALICIOUS

PDF

40.5 KB Created: 2020-08-09 19:18:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4eeb86a1ac4ac969232c093be62b9802 SHA-1: 3366a93010300c07ef6e8ff1ad4d3c78fd5c7b6d SHA-256: 2a780b9e9d16c90b2f8fed6e51ef75296b297412971c7e926db9177a41d10095
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=11th+class+biology+book+download+pdf'. This indicates a phishing or social engineering attempt, likely to redirect the user to a malicious site. The document body also contains numerous links, including the primary malicious one, suggesting a link farm or redirection strategy. No scripts were extracted from this sample.

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=11th+class+biology+book+download+pdf
    • http://files.sunpawco.com/uploads/1/3/1/4/131453818/7e79279.pdf
    • http://files.matteframe.com/uploads/1/3/1/4/131411539/gurutezaj.pdf
    • http://files.bugayinvestments.com/uploads/1/3/1/3/131383255/setobemubelopu.pdf
    • http://ferudoj.charliehempseed.com/uploads/1/3/2/8/132815367/24c3d8fc4.pdf
    • https://cdn.shopify.com/s/files/1/0431/6676/1120/files/tolunevonodejene.pdf
    • https://cdn.shopify.com/s/files/1/0437/2276/8535/files/human_anatomy_and_figure_drawing.pdf
    • https://cdn.shopify.com/s/files/1/0437/5648/6807/files/los_cuatro_acuerdos_toltecas_descargar.pdf
    • https://cdn.shopify.com/s/files/1/0436/2531/6514/files/lacrosse_rules.pdf
    • https://cdn.shopify.com/s/files/1/0432/1034/2559/files/69163725266.pdf
    • https://cdn.shopify.com/s/files/1/0430/7641/9744/files/tuxodubugezafag.pdf
    • https://cdn.shopify.com/s/files/1/0434/1733/8005/files/advertisement_copy.pdf
    • https://cdn.shopify.com/s/files/1/0433/4842/6910/files/50201228254.pdf
    • https://cdn.shopify.com/s/files/1/0437/3587/5745/files/gutamapesuvo.pdf
    • https://cdn.shopify.com/s/files/1/0432/5310/4790/files/45684671643.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/zekadixipenuvivapiwitipeb.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_off00005f7b.bin
34a65fcaa5cd15fbdbedb22c1a2dbcb9f888fd40982ef912b934cbd550eec775		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F7B 5676 bytes
font_01_sfnt_off000072f1.bin
6013866f8b955c29cd31c0309687e6c32f249f26bb2a1c71b201f4af59696e13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72F1 10192 bytes

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