Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbf24dfe599347e5…

MALICIOUS

PDF

34.1 KB Created: 2020-08-12 12:43:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b49c7ecfff6168a505993547e4eff96d SHA-1: f87a8e345da66256949c3c709f820fc809fedf20 SHA-256: cbf24dfe599347e53cdc4b94f27c4c87441f15768211457c2096aba9e8c472ab
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple external links, with one specifically identified as a malicious redirector pointing to 'https://ttraff.cc/pify?keyword=dhl+awb+form+pdf'. This URL is likely used to deliver a malicious payload or redirect to a phishing page. The document body, though heavily obfuscated, contains text related to 'Dhl awb form pdf', reinforcing the lure. The presence of numerous external PDF links suggests a link farm or a method to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=dhl+awb+form+pdf
    • http://files.hopeforrwandaschildren.org/uploads/1/3/1/4/131453858/fulape.pdf
    • http://files.pioneervalleytipoff.com/uploads/1/3/1/1/131164383/08a91a13d1d.pdf
    • http://vitin.dcmspto.org/uploads/1/3/0/8/130813366/25bca366a329a50.pdf
    • http://files.greenlightyourpassionproject.com/uploads/1/3/1/6/131607321/pitivenufu_subeforododo_karaserofoxe.pdf
    • https://cdn.shopify.com/s/files/1/0431/7937/6798/files/70478121402.pdf
    • https://cdn.shopify.com/s/files/1/0432/7810/6779/files/htps_windows._github._com.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/loxilenaxovanet.pdf
    • https://cdn.shopify.com/s/files/1/0439/1459/2408/files/64547887543.pdf
    • https://cdn.shopify.com/s/files/1/0429/8860/1503/files/47111005368.pdf
    • https://cdn.shopify.com/s/files/1/0428/3446/0828/files/94560802353.pdf
    • https://cdn.shopify.com/s/files/1/0430/1294/8121/files/zewimememizakaloturax.pdf
    • https://cdn.shopify.com/s/files/1/0428/2040/3356/files/9899259993.pdf
    • https://cdn.shopify.com/s/files/1/0435/2638/9912/files/civics_eoc_practice_test.pdf
    • https://cdn.shopify.com/s/files/1/0429/3446/8774/files/mukelegoxabavolokarof.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/83583068491.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_off000048f4.bin
c1e426868f7cd8520b0bf45a159b091ab8e5af2047a5847b3e3f8d8540f8dd69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x48F4 5336 bytes
font_01_sfnt_off00005b03.bin
07afa601417d065e17fd592a3d27d002c0a48ae5dda1bf13cb5558bfcf761ff5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B03 9632 bytes

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