Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc643557a54710ea…

MALICIOUS

PDF

48.7 KB Created: 2020-08-18 19:23:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9aafc236563f89746c56010a420f5f77 SHA-1: a72b03b399bcca8ac9060438f46bcfaca7619467 SHA-256: cc643557a54710ea5ef0bb95a42ad250fa181ce47557aa3ad999d45e08bb176f
150 Risk Score

Malware Insights

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

The PDF contains a prominent link with the text 'Aadhar card online update form', which is a common lure for phishing and scams. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms that the primary URL 'https://ttraff.ru/pify?keyword=aadhar+card+online+update+form' leads to malicious redirector infrastructure. The PDF also contains a link farm, as indicated by the 'PDF_SEO_LINK_FARM' heuristic, suggesting an attempt to distribute malicious content widely. The ML classifier strongly supports the malicious nature of this PDF.

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.ru/pify?keyword=aadhar+card+online+update+form
    • http://suroli.dorangoats.com/uploads/1/3/0/9/130969054/efd0fe1b.pdf
    • https://cdn.shopify.com/s/files/1/0432/5185/9616/files/34303015329.pdf
    • https://cdn.shopify.com/s/files/1/0432/9596/5352/files/zavawuvik.pdf
    • https://cdn.shopify.com/s/files/1/0428/3577/1558/files/46814376840.pdf
    • https://cdn.shopify.com/s/files/1/0437/3371/3050/files/23102261736.pdf
    • https://cdn.shopify.com/s/files/1/0430/3893/3146/files/78334687906.pdf
    • https://cdn.shopify.com/s/files/1/0431/8298/1278/files/ginukopisib.pdf
    • https://cdn.shopify.com/s/files/1/0432/2610/3971/files/siwururojenanofe.pdf
    • https://cdn.shopify.com/s/files/1/0446/9984/4762/files/39153146395.pdf
    • https://cdn.shopify.com/s/files/1/0434/6747/3046/files/a_concise_public_speaking_handbook_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/7749/3146/files/gisomodiverawepanomo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c3d.bin
7c460e02f99f42f299b3b234a4ce4608f6c29b245f9f6c361e0c4189c5e5f2c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C3D 5204 bytes
font_01_sfnt_off00007dbb.bin
3eb92bc958d3cc37dccf8be83a0f4dc929d744bef3449f8464d9fc0e2ad042c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DBB 10432 bytes
font_02_sfnt_off0000a113.bin
6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA113 16164 bytes

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