Malicious PDF — malware analysis report

Static analysis result for SHA-256 541a29fb3e9bc968…

MALICIOUS

PDF

52.0 KB Created: 2020-08-13 23:44:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 717ebba79000c18ddc0363af1660ba57 SHA-1: 6ffd6fe9167231ace9d7a1ef04fc4d4071e3fcb2 SHA-256: 541a29fb3e9bc96857c6498b8fbf1ab8e84dff4791428b809551c7f33bede8fd
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=gnossienne+no+1+free+sheet+music'. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous links to external PDFs, many hosted on Shopify. The document body, though heavily obfuscated, contains the primary malicious URL and several other PDF links, suggesting a lure to download further malicious content or engage in phishing. 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.cc/pify?keyword=gnossienne+no+1+free+sheet+music
    • http://jakakesox.sallyeyring.com/uploads/1/3/0/7/130775162/vorof.pdf
    • http://files.hycracing.com/uploads/1/3/1/6/131606349/dudapexivuk_kudubodopedafiw_noxilidezejo_zojif.pdf
    • http://files.chargclarkcounty.org/uploads/1/3/1/3/131378990/mosodiwopixujisef.pdf
    • http://files.championtruevaluetexas.com/uploads/1/3/0/8/130873783/5480090.pdf
    • http://files.alfredartwalk.org/uploads/1/3/0/9/130969873/cc1c10af448f.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/jokapuketepudamedas.pdf
    • https://cdn.shopify.com/s/files/1/0435/4372/4186/files/73718062104.pdf
    • https://cdn.shopify.com/s/files/1/0438/3604/7522/files/19749065606.pdf
    • https://cdn.shopify.com/s/files/1/0438/1822/1730/files/maguvisasuputupakakuvijak.pdf
    • https://cdn.shopify.com/s/files/1/0441/0084/5720/files/tipos_de_empresas_segun_su_actividad_economica.pdf
    • https://cdn.shopify.com/s/files/1/0433/4052/9816/files/tiwibewapizut.pdf
    • https://cdn.shopify.com/s/files/1/0433/4914/7816/files/96815374346.pdf
    • https://cdn.shopify.com/s/files/1/0429/9807/1450/files/rekefajutelevozotewitazu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5658/7174/files/los_logos_7.pdf
    • https://cdn.shopify.com/s/files/1/0429/4495/4527/files/49920833584.pdf
    • https://cdn.shopify.com/s/files/1/0433/4911/5029/files/14799317461.pdf
    • https://cdn.shopify.com/s/files/1/0430/8526/7097/files/admirvel_mundo_novo_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0430/8136/7712/files/noneseberi.pdf
    • https://cdn.shopify.com/s/files/1/0429/6497/5765/files/42844917092.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_off0000688c.bin
688fd19d569ffc15b337c2dbf1b5b55a02930ddc7ac5339e90a5d78182baa78e
pdf-font-stream PDF embedded font (sfnt) at offset 0x688C 4960 bytes
font_01_sfnt_off00007949.bin
5201600494785bbd15d72c1fc7cdac15b42e6ccccb68ea93e774302d014da76a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7949 16000 bytes
font_02_sfnt_off0000abab.bin
fb7b45e24c28c4473d0ca1c6410c593992d9a809009f9c41b5ae32c9142507dd
pdf-font-stream PDF embedded font (sfnt) at offset 0xABAB 16120 bytes