Malicious PDF — malware analysis report

Static analysis result for SHA-256 f223939fd1c6c08f…

MALICIOUS

PDF

43.4 KB Created: 2020-08-15 07:53:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b9e693c2531b3db7fd095765297e062d SHA-1: afa4eb2c817320baaff3dd8d24460b58dce08562 SHA-256: f223939fd1c6c08f4fe8888252373dd24ed0a5ca795219815fa2451212e3bacf
150 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=alaipayuthe+kanna+ringtone'. The document also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or redirection strategy. The ML classifier strongly supports the malicious verdict. No scripts were extracted, but the presence of the malicious redirector indicates an attempt to lure the user to a harmful site.

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.ru/pify?keyword=alaipayuthe+kanna+ringtone
    • http://files.sqrlzinc.com/uploads/1/3/0/8/130873728/dogizukutogadel.pdf
    • http://files.vomhiddencreek.com/uploads/1/3/1/6/131606127/kukuko.pdf
    • http://files.h2hclaystudio.com/uploads/1/3/1/4/131407138/5593390.pdf
    • https://cdn.shopify.com/s/files/1/0429/3096/2588/files/suwuviwobudu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3673/7699/files/5637246316.pdf
    • https://cdn.shopify.com/s/files/1/0429/8476/7641/files/26548229858.pdf
    • https://cdn.shopify.com/s/files/1/0431/2812/7650/files/supervised_autonomous_robotic_soft_tissue_surgery.pdf
    • https://cdn.shopify.com/s/files/1/0437/6517/0334/files/boiler_feed_pump_maintenance.pdf
    • https://cdn.shopify.com/s/files/1/0432/3550/8392/files/tifagokiso.pdf
    • https://cdn.shopify.com/s/files/1/0434/5056/4773/files/carmilla_francais.pdf
    • https://cdn.shopify.com/s/files/1/0435/0961/2712/files/anandam_telugu_movie.pdf
    • https://cdn.shopify.com/s/files/1/0431/8488/1825/files/61191022204.pdf
    • https://cdn.shopify.com/s/files/1/0451/3293/9418/files/importance_of_art_and_craft_in_early_childhood_education.pdf
    • https://cdn.shopify.com/s/files/1/0431/1020/3556/files/mapamundi_con_nombres_a_color.pdf
    • https://cdn.shopify.com/s/files/1/0431/5699/6247/files/40395747710.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_off000054a4.bin
b15b850145632666f42c70bbb742a335411df18a42b64c8088494fb57a9918d5
pdf-font-stream PDF embedded font (sfnt) at offset 0x54A4 5060 bytes
font_01_sfnt_off000065cd.bin
34ade57fe0e70f9e11a5b835234fab131b4110468f95ad55c22d1eaed3c35c85
pdf-font-stream PDF embedded font (sfnt) at offset 0x65CD 3812 bytes
font_02_sfnt_off0000738c.bin
c733503f2e2eaefe571586781bb75c740ebc5b0f8d53076d6c3d845d53afc2c7
pdf-font-stream PDF embedded font (sfnt) at offset 0x738C 14256 bytes