Malicious PDF — malware analysis report

Static analysis result for SHA-256 550d526dc210f622…

MALICIOUS

PDF

69.1 KB Created: 2020-07-11 05:10:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-15
MD5: 6da723237ad25bed16642524d39d50ab SHA-1: 4d2b6e876b65584e5f8db25b8c148d21f86cc997 SHA-256: 550d526dc210f6224a03f6a655786126ffab9aace428f0b8675032049942e87b
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to domains that appear to be part of a link farm. One of the primary links directs to a known malicious redirector infrastructure. This suggests the document is designed to drive traffic to malicious sites, likely for phishing or malware distribution. 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.ru/pify?keyword=cairo+subway+map+pdf In PDF document text
    • http://files.helen-bouchardart.com/uploads/1/3/1/4/131406800/wodifolefizotep-sujafi-tubefugukoz.pdfIn PDF document text
    • http://files.gracechurchponcacity.org/uploads/1/3/0/9/130969545/530e1d.pdfIn PDF document text
    • http://files.kimkirch.com/uploads/1/3/0/7/130775827/welobozutudirol-fulunim.pdfIn PDF document text
    • http://files.inahollandaze.com/uploads/1/3/1/4/131407767/2667061.pdfIn PDF document text
    • http://files.logancountycore.com/uploads/1/3/2/8/132814523/7127633.pdfIn PDF document text
    • http://files.adrianamedinacagan.com/uploads/1/3/1/6/131606844/sevumer.pdfIn PDF document text
    • http://files.eslboom.com/uploads/1/3/0/9/130969597/9215193.pdfIn PDF document text
    • http://files.hornedreaders.net/uploads/1/3/1/4/131483371/0b0ebfc.pdfIn PDF document text
    • http://files.opheliafinke.net/uploads/1/3/1/1/131164567/guzejutinobo-kenasobuwu.pdfIn PDF document text
    • http://files.crystalsontherocks.com/uploads/1/3/2/3/132302913/bobulivode.pdfIn PDF document text
    • http://files.epsidst.com/uploads/1/3/2/6/132696263/0d53ba6a8f4f2a.pdfIn PDF document text
    • http://files.halfpintaussies.com/uploads/1/3/0/7/130739131/f9eb0b7c6cd6b.pdfIn PDF document text
    • https://lidalavanepu.files.wordpress.com/2020/06/31446745135.pdfIn PDF document text
    • https://zukozadugon.files.wordpress.com/2020/07/85820298709.pdfIn PDF document text
    • https://bejoneloxin.files.wordpress.com/2020/07/90386349287.pdfIn PDF document text
    • https://xilogip.files.wordpress.com/2020/06/39207815501.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4041/6678/files/gumabivimezefafaxek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vukanuzedatijaxugevune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1714/2433/files/rumopaxokepoxofatuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4490/5884/files/86386502278.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/69804511697.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000e158.bin
14d99396856b22b738bd0b9beee39f0233f0d9738189d215c0e1bc1b6ad3d160		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xE158 21892 bytes
font_00_sfnt_off0000a9a3.bin
edf4c0a58f690b61383c75e16576e731f56db53f360a7f790df255aefd1c4379		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA9A3 5092 bytes
font_01_sfnt_off0000bafa.bin
963f04ec2b9e0ae564e4b4280e9ff7bec089e0ada5f57e2962d008e089acceec		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBAFA 11440 bytes

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