Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd59f69555a0cc3b…

MALICIOUS

PDF

59.4 KB Created: 2020-08-11 05:33:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e0d535f7bdbe1cc92cfd54f14007bd0a SHA-1: 6c3fa479075d26a655b1c60fd1cdf6de01549e07 SHA-256: fd59f69555a0cc3bbd12a0366d88630dd6606fc070a7a0b75e6611118997b2da
130 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The presence of a 'download button' heuristic and the structure of the document, which includes a large number of external PDF links, suggest a lure to download further malicious content. The primary malicious URL identified is https://ttraff.cc/pify?keyword=modern+digital+electronics+pdf+download, which likely serves as a gateway to malicious payloads.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=modern+digital+electronics+pdf+download
    • http://roxib.twofriendsmetalsculpture.com/uploads/1/3/1/6/131606066/8264643.pdf
    • http://files.goldenriverorchard.com/uploads/1/3/1/0/131070588/b779a94eb3855.pdf
    • http://forugux.radhikanagpal.org/uploads/1/3/1/8/131855997/5579961.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nitopufekuriwuk.pdf
    • https://cdn.shopify.com/s/files/1/0433/2827/4582/files/46439227054.pdf
    • https://cdn.shopify.com/s/files/1/0430/3313/3209/files/69221888505.pdf
    • https://cdn.shopify.com/s/files/1/0434/1963/1765/files/22674924191.pdf
    • https://cdn.shopify.com/s/files/1/0433/7703/3372/files/flight_of_the_bumblebee_sheet_music_trumpet.pdf
    • https://cdn.shopify.com/s/files/1/0434/5797/0329/files/grammar_english_oxford.pdf
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/tusopidutogebowuligor.pdf
    • https://cdn.shopify.com/s/files/1/0433/7595/2030/files/bergeron_process.pdf
    • https://cdn.shopify.com/s/files/1/0438/1822/1730/files/descargar_cancionero_cristiano_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0435/9212/2536/files/bound_to_you_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0431/9461/3924/files/25511397528.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_off00009c32.bin
dcc2ada3e3e931f2ea9c1b20e0a3b923474dbc223ccfb91c0b1cc62d716f212c
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C32 5420 bytes
font_01_sfnt_off0000aece.bin
b87572be4184e198c671ec176d3ba634d12da01615e601c58f33e8d8b05e519f
pdf-font-stream PDF embedded font (sfnt) at offset 0xAECE 16112 bytes