Malicious PDF — malware analysis report

Static analysis result for SHA-256 d83c1206dea9ce48…

MALICIOUS

PDF

68.1 KB Created: 2020-08-19 01:40:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 682b8aa2353c5e9d937b4a176b5914b0 SHA-1: 7727837921016c03d7262aa06e22bb082b0f8c53 SHA-256: d83c1206dea9ce485f2bf2a176d168b8c0e0f029728f689388dd0e11f3220276
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=arjuna+award+2016+winners+list+pdf'. This indicates the document's primary purpose is to redirect users to a potentially harmful site. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to improve search engine visibility for malicious 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=arjuna+award+2016+winners+list+pdf
    • http://dewusatiz.ashleyinanutshell.com/uploads/1/3/1/8/131857090/7763997.pdf
    • http://files.cybersafetyproject.com.au/uploads/1/3/0/7/130738633/8fee6f.pdf
    • http://files.firedperformancehorses.com/uploads/1/3/0/7/130739544/zasesidopowi_nesir_zunokevijekewab_tefapixut.pdf
    • http://files.rhythmixent.com/uploads/1/3/0/7/130775583/5608292e26f.pdf
    • https://cdn.shopify.com/s/files/1/0432/4098/0643/files/35680817856.pdf
    • https://cdn.shopify.com/s/files/1/0447/9657/5904/files/blomberg_built_under_double_oven_manual.pdf
    • https://cdn.shopify.com/s/files/1/0447/4611/3173/files/autocad_sinhala_download.pdf
    • https://cdn.shopify.com/s/files/1/0427/5548/9948/files/lusosidotajifazipajena.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/test_1879eb6a-339e-4d45-a409-571cd94a4742.pdf?v=1594212285
    • https://cdn.shopify.com/s/files/1/0432/1234/1412/files/4696373122.pdf
    • https://cdn.shopify.com/s/files/1/0433/2270/4030/files/zutamobapigamune.pdf
    • https://cdn.shopify.com/s/files/1/0431/4375/7992/files/pulse_width_modulation_circuit.pdf
    • https://cdn.shopify.com/s/files/1/0429/6104/3605/files/1782465023.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/hsc_general_maths_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0435/4310/1591/files/magegixuv.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/46824776831.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_off0000abc8.bin
d0beb48e0ff729f1bb5398657ad2b942398b6d182fd10500208997023d42b4b6
pdf-font-stream PDF embedded font (sfnt) at offset 0xABC8 5672 bytes
font_01_sfnt_off0000bf36.bin
b94083aa0bd0d0e804da30dfad164290ebc23e1cad304774ee5289ebecb2a16d
pdf-font-stream PDF embedded font (sfnt) at offset 0xBF36 14260 bytes
font_02_sfnt_off0000ebf7.bin
e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6
pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF7 16164 bytes