Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e6c59fda7d8550d…

MALICIOUS

PDF

37.8 KB Created: 2020-08-03 17:25:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 517d915df3a740708bf203d4947ff919 SHA-1: 178af6514ad7f6a1351171a0616ecb5aec5798d3 SHA-256: 1e6c59fda7d8550d464dbd06ce13fcc4b99af392aca87c864b68e826c6de414c
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=calculo+e+administra%25C3%25A7ao+de+medicamentos+na+enfermagem+pdf'. This indicates the document's primary purpose is to lure the user to this malicious URL. The PDF also contains a link farm, suggesting an attempt to manipulate search engine results or distribute content broadly. No scripts were extracted from this sample.

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=calculo+e+administra%25C3%25A7ao+de+medicamentos+na+enfermagem+pdf
    • http://files.robertpycior.com/uploads/1/3/0/7/130775432/gevanapakekigosiw.pdf
    • http://files.regionvssfair.org/uploads/1/3/2/7/132712093/bobofasimogif.pdf
    • http://files.youdesignleather.com/uploads/1/3/2/6/132682585/masebut_gawotumobavo_sivavule.pdf
    • http://files.musee-militaire.com/uploads/1/3/1/0/131070317/551221.pdf
    • http://files.welchesterwellness.com/uploads/1/3/1/0/131070718/8132347.pdf
    • https://cdn.shopify.com/s/files/1/0437/3626/8949/files/five_finger_death_punch_pre-_emptive_strike.pdf
    • https://cdn.shopify.com/s/files/1/0427/4972/2790/files/51167028349.pdf
    • https://cdn.shopify.com/s/files/1/0437/1991/7720/files/dejabakarelokerakexe.pdf
    • https://cdn.shopify.com/s/files/1/0436/3495/0304/files/poweredge_r740_server_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/8827/2807/files/nuzerirodeligaziluzev.pdf
    • https://cdn.shopify.com/s/files/1/0428/0533/0083/files/2536131564.pdf
    • https://cdn.shopify.com/s/files/1/0434/1448/7190/files/tulelujobiw.pdf
    • https://cdn.shopify.com/s/files/1/0434/1828/8277/files/kozusabux.pdf
    • https://cdn.shopify.com/s/files/1/0441/3010/7544/files/kusufezutumufujati.pdf
    • https://cdn.shopify.com/s/files/1/0432/5897/0280/files/pebimotiwigixinuzesos.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_off00004d4f.bin
138c3307ee598c04e3b73908b22586f263ea108ec707b14b526f255eb82c94e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D4F 5564 bytes
font_01_sfnt_off00005fdd.bin
39c299946ad3c6f7634723c28b471a2abcca4a9ec111854545a0339cc76ca424		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FDD 13000 bytes

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