Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ef5032d6a9779ba…

MALICIOUS

PDF

51.5 KB Created: 2020-08-04 23:58:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 648e9d754330d24fdc7da451a0266091 SHA-1: 8b1e83f64a7a1e8b6f720596c398906fe9dadc7e SHA-256: 9ef5032d6a9779bacb899e435c3b1f4e1101a4154b1251e3447fb36f683f86a2
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of the primary links directs the user to a known malicious redirector, ttraff.cc, disguised as a PDF download for "2nd law of thermodynamics notes pdf". This suggests a social engineering attempt to drive traffic to malicious infrastructure. No scripts were extracted, limiting the analysis of direct payload execution.

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=2nd+law+of+thermodynamics+notes+pdf
    • http://files.marikym.com/uploads/1/3/1/3/131381259/potelekemur.pdf
    • http://files.techedmn.com/uploads/1/3/1/6/131636712/soxax_tupoluzudaken_babuguva_marunej.pdf
    • http://files.thelostvalleyobservatory.com/uploads/1/3/2/6/132695216/8837605.pdf
    • http://files.doublemindedgod.com/uploads/1/3/0/7/130775137/1a730985498ebb3.pdf
    • https://cdn.shopify.com/s/files/1/0434/0154/3831/files/pathfinder_path_of_war.pdf
    • https://cdn.shopify.com/s/files/1/0432/0939/2285/files/vevulefefulasilibeg.pdf
    • https://cdn.shopify.com/s/files/1/0436/7020/8662/files/fijafo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87967576867.pdf
    • https://cdn.shopify.com/s/files/1/0432/7079/9516/files/59305968417.pdf
    • https://cdn.shopify.com/s/files/1/0437/1172/5723/files/sekiro_bundled_jizo_statue.pdf
    • https://cdn.shopify.com/s/files/1/0433/2548/9305/files/astm_a53_a53m_07.pdf
    • https://cdn.shopify.com/s/files/1/0432/6516/3422/files/xugimoritatemobu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7199/5030/files/xunepetuxawivomaxoz.pdf
    • https://cdn.shopify.com/s/files/1/0429/9295/9642/files/63747451315.pdf
    • https://cdn.shopify.com/s/files/1/0429/2627/6775/files/fogufobibop.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ninitegabi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6151/8231/files/65731754910.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_off00007c2d.bin
62a041e6096a5967c0129eb92c0b6b6e25687e8463c7c8a4e4a06ef1d54b51cd
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C2D 5416 bytes
font_01_sfnt_off00008e77.bin
9a449ca788a1c7bb933461762d225307a04104096a20b0025d7264d34575fe08
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E77 10732 bytes
font_02_sfnt_off0000b2ec.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0xB2EC 4324 bytes