Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ee3cae65cd549f4…

MALICIOUS

PDF

60.0 KB Created: 2020-08-13 21:42:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e82837131738352ee9683b0bb0f9b46 SHA-1: cc4275698ea7c4264762a287d3566bdeae27af0a SHA-256: 9ee3cae65cd549f4c77d23b1a1deaf4ef023fdbe7740d61bd05282386489c664
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a 'PDF_SEO_LINK_FARM'. The primary malicious URL, 'https://ttraff.ru/pify?keyword=actividad+epileptiforme+multifocal', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to this malicious URL, suggesting the document's purpose is to lure users to malicious sites. No scripts were extracted, limiting the analysis of direct execution behavior.

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.ru/pify?keyword=actividad+epileptiforme+multifocal
    • http://pagelikul.glennfisherjewelry.com/uploads/1/3/1/4/131409090/koxok-nuboledakoba-kebelelazisab.pdf
    • http://files.janeramsey.com/uploads/1/3/0/7/130776196/422777a006afd5c.pdf
    • http://files.thepartyplaceaugusta.com/uploads/1/3/0/8/130874593/wijajonaj.pdf
    • http://viwukoz.coloradocomfortinspections.com/uploads/1/3/1/8/131856372/3695018.pdf
    • https://cdn.shopify.com/s/files/1/0431/0473/1300/files/mumafofofowar.pdf
    • https://cdn.shopify.com/s/files/1/0429/4672/3996/files/classification_of_algae_by_lee.pdf
    • https://cdn.shopify.com/s/files/1/0429/2168/9254/files/13798695670.pdf
    • https://cdn.shopify.com/s/files/1/0436/2086/0064/files/19479581551.pdf
    • https://cdn.shopify.com/s/files/1/0433/4357/7256/files/bhagavad_gita_in_tamil_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/8314/4093/files/levudovazopuxofigurodube.pdf
    • https://cdn.shopify.com/s/files/1/0430/0688/6051/files/round_number_python.pdf
    • https://cdn.shopify.com/s/files/1/0433/2303/1720/files/rigutinuvizuzaxajatidok.pdf
    • https://cdn.shopify.com/s/files/1/0433/6877/5841/files/writing_fractions_in_simplest_form.pdf
    • https://cdn.shopify.com/s/files/1/0447/9811/6006/files/midigipixufifidireka.pdf
    • https://cdn.shopify.com/s/files/1/0431/2684/9700/files/xatogarawidazo.pdf
    • https://cdn.shopify.com/s/files/1/0433/9371/2286/files/kisiduwadurubifano.pdf
    • https://cdn.shopify.com/s/files/1/0438/8297/1291/files/dfs_algorithm_c.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_off0000a937.bin
a21c7b395982da37e68fadbed4c2712e44314202c16dac3b9b93b407aa508108
pdf-font-stream PDF embedded font (sfnt) at offset 0xA937 5172 bytes
font_01_sfnt_off0000bab6.bin
c07fdd032929884c0fcb716d67ff6e570e7a78664f3c660b947ae09f12480e32
pdf-font-stream PDF embedded font (sfnt) at offset 0xBAB6 11956 bytes