Malicious PDF — malware analysis report

Static analysis result for SHA-256 f68e75882b40052a…

MALICIOUS

PDF

48.4 KB Created: 2020-08-06 07:09:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 56bd556e9a9825fbbeebedc259a57cbe SHA-1: a6c4c7a9c63e0f9c34b52dc5f6c8aa53e67f3ded SHA-256: f68e75882b40052a87892b16a43e1ec6b42bb386d712e5eb698c58335bb94db1
128 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector. The document body, though obfuscated, contains text that appears to be a lure for a syllabus, combined with the malicious redirector URL. This suggests the document is designed to trick users into clicking the malicious link, likely leading to malware download or a phishing page.

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=syllabus+biology+class+12+up+board+pdf
    • http://files.fryfamilyfoundation.com/uploads/1/3/1/3/131398085/vemaxakozu_wexibel_ditile.pdf
    • http://jaziv.averti.be/uploads/1/3/2/7/132741334/kuwif-fogiga.pdf
    • http://files.jemendozalahc.com/uploads/1/3/1/4/131484328/mufakap_dujuzol_texap_dubebinev.pdf
    • https://cdn.shopify.com/s/files/1/0437/4131/5223/files/maple_syrup_urine_disease.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80463449019.pdf
    • https://cdn.shopify.com/s/files/1/0438/3227/9190/files/gejedawodo.pdf
    • https://cdn.shopify.com/s/files/1/0430/3483/7149/files/fewowu.pdf
    • https://cdn.shopify.com/s/files/1/0437/8093/1733/files/78850886432.pdf
    • https://cdn.shopify.com/s/files/1/0437/4469/0337/files/sivolixatebagurivimavenow.pdf
    • https://cdn.shopify.com/s/files/1/0432/3776/9383/files/minecraft_shader_1._8._7.pdf
    • https://cdn.shopify.com/s/files/1/0428/3459/1907/files/jegej.pdf
    • https://cdn.shopify.com/s/files/1/0429/8221/1735/files/87719408477.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005eaa.bin
784a4bd8a60e5dc5a7ca9c9d6e59d3d29442870d52acf91dc7f916fd020b11e2
pdf-font-stream PDF embedded font (sfnt) at offset 0x5EAA 5428 bytes
font_01_sfnt_off00007128.bin
319484688d039e3934d43d8d43c705bc2cfce38487a90ed05069ceab0c7ddaf6
pdf-font-stream PDF embedded font (sfnt) at offset 0x7128 10512 bytes
font_02_sfnt_off000094c6.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x94C6 4324 bytes
font_03_sfnt_off0000a2c6.bin
c7751f827061ef1f398c40189c5b4b5cb72232be0f584eae466f63ac81652207
pdf-font-stream PDF embedded font (sfnt) at offset 0xA2C6 4820 bytes