Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff3d84227f3bf786…

MALICIOUS

PDF

40.6 KB Created: 2020-09-01 05:51:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 97cb54f58089cb2f0c6fa5fc0e745ac9 SHA-1: 950ddd9f356c22faa5a8870dec27cd25ec861930 SHA-256: ff3d84227f3bf7868a48031417eb00d5c8c313293d59a3883ea51dce71ab8f2f
150 Risk Score

Malware Insights

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

The PDF document contains a link farm and a prominent malicious redirector URL, suggesting a phishing or scam attempt. The document body, though heavily corrupted, contains text related to 'Spotify premium pc gratis 2018', aligning with the lure. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the presence of a link to known malicious infrastructure.

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.com/wix?keyword=spotify+premium+pc+gratis+2018
    • https://static.usrfiles.com/ugd/384ea4_f23bd22c859f43f292cd386ef58a32ef.pdf
    • https://static.usrfiles.com/ugd/2813e2_ab65054283da4270893b416fcfadc83b.pdf
    • https://static.usrfiles.com/ugd/74a852_56d2be1d905842679d37d585442786bd.pdf
    • https://cdn.shopify.com/s/files/1/0434/6983/2354/files/synthetic_division_worksheet_with_missing_terms.pdf
    • https://cdn.shopify.com/s/files/1/0429/2447/4531/files/nutudatot.pdf
    • https://cdn.shopify.com/s/files/1/0429/1140/0102/files/95663935495.pdf
    • https://cdn.shopify.com/s/files/1/0428/6405/0332/files/divinity_original_sin_2_metamorph_build.pdf
    • https://cdn.shopify.com/s/files/1/0437/0399/2485/files/pedov.pdf
    • https://cdn.shopify.com/s/files/1/0432/5815/1072/files/68263976179.pdf
    • https://cdn.shopify.com/s/files/1/0435/1292/2264/files/gapofisekijatinako.pdf
    • https://cdn.shopify.com/s/files/1/0433/6379/5096/files/14714742384.pdf
    • https://cdn.shopify.com/s/files/1/0432/0234/7168/files/74908376612.pdf
    • https://static.usrfiles.com/ugd/83f04e_3aa2548a4e6c4f1ca96318e7043fc316.pdf
    • https://static.usrfiles.com/ugd/fac845_871a1ca32b41422381dbe9de7c3ceea4.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_off00005ec2.bin
4c9666a8bdc96c76e7437c8d92020a48003eeb9cc191427650226ccb5885c3ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EC2 6028 bytes
font_01_sfnt_off00007340.bin
02e4246b214cffcb3d1168fc01637b7ba492f2325e9cd152d67446e5509817f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7340 10028 bytes

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