Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7405850fdd82f5f…

MALICIOUS

PDF

39.9 KB Created: 2020-08-04 22:45:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e3a804b978f25ac0973715c93b92608 SHA-1: 7661a8046713519d24b2676c0479a12f76974fa1 SHA-256: e7405850fdd82f5ff64d71ef71315711fb64cd1aa4c7cdeb641d8001d88ba4b3
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure related to 'accounting meaning and definition pdf' and includes the malicious URL. This indicates the document is designed to trick users into visiting a malicious site, likely for further exploitation or credential harvesting.

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=accounting+meaning+and+definition+pdf
    • http://wijud.plymouthcountyfire.com/uploads/1/3/1/4/131453247/3980190.pdf
    • http://files.guadalupeschool.com/uploads/1/3/1/4/131483138/jurimesekijazusovag.pdf
    • http://files.cuisineinspired.com/uploads/1/3/2/7/132740871/wogutasiperu-wavodaf.pdf
    • http://kovev.inspiring-senses.com/uploads/1/3/0/7/130739275/57e9fa84c134.pdf
    • http://files.getitwright.com/uploads/1/3/0/7/130776788/pufim-fafopunatobi.pdf
    • https://cdn.shopify.com/s/files/1/0440/1741/8405/files/55805413659.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xizujebekox.pdf
    • https://cdn.shopify.com/s/files/1/0432/9763/6512/files/honda_self_propelled_lawn_mower_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/8276/6750/files/munukaxumure.pdf
    • https://cdn.shopify.com/s/files/1/0440/1430/5430/files/glu_credits_hack_apk.pdf
    • https://cdn.shopify.com/s/files/1/0433/1103/8632/files/47105716808.pdf
    • https://cdn.shopify.com/s/files/1/0429/9869/4042/files/zafiguxovidekademogu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5935/5558/files/nidele.pdf
    • https://cdn.shopify.com/s/files/1/0429/4151/3894/files/rizipadefipoxinefokageje.pdf
    • https://cdn.shopify.com/s/files/1/0432/5359/6324/files/xepuse.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000619f.bin
81d7732e4b2883fba746076ab809b1125bc35282ac0765246d97544cb856c701		 pdf-font-stream PDF embedded font (sfnt) at offset 0x619F 5156 bytes
font_01_sfnt_off00007323.bin
b26dc36cae7fdd58d15777bd825ba82d841acfcd776ae6186762c760377ee242		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7323 9168 bytes

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