Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca3bf1220ec76222…

MALICIOUS

PDF

45.8 KB Created: 2020-08-20 03:19:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ffbbe53ad6a034a2da3cb2f93894cb4 SHA-1: d7ded34a223ef76d5c1902b5b9a3474a9b0509e9 SHA-256: ca3bf1220ec76222dbf4d567d93d61f4240abb9f4b0f015c2c8629fe04c798c4
120 Risk Score

Malware Insights

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

The PDF file contains embedded links that redirect to malicious infrastructure, specifically identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to 'Maplestory m leveling guide after 100' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, further supporting the malicious intent.

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.com/pify?keyword=maplestory+m+leveling+guide+after+100
    • http://lirip.peacerivercommunitychoir.com/uploads/1/3/1/6/131637339/butakuromikiduriv.pdf
    • http://files.cocon-interior.nl/uploads/1/3/2/6/132681916/f5d5a30.pdf
    • http://files.shelbysilver.com/uploads/1/3/0/7/130738559/3b5af2362c.pdf
    • https://cdn.shopify.com/s/files/1/0434/4158/6332/files/65857693777.pdf
    • https://cdn.shopify.com/s/files/1/0431/2891/4087/files/tabadoder.pdf
    • https://cdn.shopify.com/s/files/1/0430/8054/8505/files/54759266312.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/40429789840.pdf
    • https://cdn.shopify.com/s/files/1/0430/6901/4165/files/ilmi_capsule_islamiat_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/7515/7670/files/pujigo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1675/7153/files/12410667326.pdf
    • https://cdn.shopify.com/s/files/1/0432/7315/8806/files/28148062701.pdf
    • https://cdn.shopify.com/s/files/1/0433/1618/3205/files/cadet_college_ormara_admission_form_2018.pdf
    • https://cdn.shopify.com/s/files/1/0432/4494/5571/files/colorectal_cancer_definition.pdf
    • https://cdn.shopify.com/s/files/1/0437/7211/7141/files/nitomakoxafebidakomo.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/
    • https://cdn.shopify.com/s

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006517.bin
cb3fec764b3b63267f9b743f29330cba8439973739e6c476d093365f52fa3e73		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6517 5604 bytes
font_01_sfnt_off00007821.bin
acd396be1100e3f1e54eef249e15bc860f8d438b883e44cf3af5c83e1856cd66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7821 10388 bytes
font_02_sfnt_off00009ba0.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BA0 4324 bytes

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