Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdefd562848a0941…

MALICIOUS

PDF

47.7 KB Created: 2020-08-06 07:44:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92695f7b961e6d01a85a018ff179d68d SHA-1: 892df5bba7ac65360df5b1c827f52e4371b65d29 SHA-256: cdefd562848a0941a491b1be2b9f5734f48d988f63698830ca2de12a16101151
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links, 'https://ttraff.cc/pify?keyword=asignaturas+derecho+uned+pdf', is identified as a malicious redirector. This suggests the document is designed to trick users into visiting malicious websites by masquerading as legitimate academic content.

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=asignaturas+derecho+uned+pdf
    • http://files.glennisesalean.com/uploads/1/3/1/3/131379223/xotemazunasut_ziwovugafatut_bevino_rumefip.pdf
    • http://files.nmtamale.com/uploads/1/3/2/6/132695354/nelotusofogew-xojipovekajexe-jukujidodo.pdf
    • http://deledexe.wonderfulpowerfulme.com/uploads/1/3/1/3/131379246/roketox_jegitiri_kuditanokakowof.pdf
    • http://files.artandsoulmakeup.com/uploads/1/3/0/8/130813899/dc6310.pdf
    • https://cdn.shopify.com/s/files/1/0433/7316/6744/files/tejomosafujenimu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/titigabibuzumazavuxi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3337/0522/files/42601526633.pdf
    • https://cdn.shopify.com/s/files/1/0432/7273/2825/files/89447499441.pdf
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/gobir.pdf
    • https://cdn.shopify.com/s/files/1/0437/0097/7829/files/9988512029.pdf
    • https://cdn.shopify.com/s/files/1/0432/5244/9435/files/57271980354.pdf
    • https://cdn.shopify.com/s/files/1/0431/2665/3077/files/becker_cpa_exam_review_2020.pdf
    • https://cdn.shopify.com/s/files/1/0435/8035/8811/files/pasomozo.pdf
    • https://cdn.shopify.com/s/files/1/0435/0096/1947/files/pdf_a_word_program_full.pdf
    • https://cdn.shopify.com/s/files/1/0431/6220/6357/files/7089935261.pdf
    • https://cdn.shopify.com/s/files/1/0438/6163/9318/files/3302030860.pdf
    • https://cdn.shopify.com/s/files/1/0431/4041/5644/files/vufitufuburosavarudikod.pdf
    • https://cdn.shopify.com/s/files/1/0440/6591/5032/files/i_am_discourses.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_off00006402.bin
68cfdfcf28fd238c51afd4ce0ac71efc1dadb40e881c29201546c59135537fe5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6402 5372 bytes
font_01_sfnt_off00007646.bin
3475d4329119b14379bdd3a568d6bcab2cb17a8936fea2a61d07a072605e2c3a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7646 11616 bytes
font_02_sfnt_off00009bd4.bin
aad9bc0f36eadc3314e08670b59090120051e308b357201f134af3d0b781b2b0
pdf-font-stream PDF embedded font (sfnt) at offset 0x9BD4 16312 bytes