Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bd034fb5add5e34…

MALICIOUS

PDF

42.2 KB Created: 2020-08-21 23:24:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0718772cde62d320619351721e94d637 SHA-1: ca54e134ac57b972eb52925af976bc35eae28572 SHA-256: 9bd034fb5add5e34e36e6d5aa151bae4a980414c2b43b0670a15560242cddf4b
150 Risk Score

Malware Insights

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

The PDF file was flagged for containing a malicious redirector link and a large number of external links, suggesting a link farm. The primary malicious URL identified is https://ttraff.cc/pify?keyword=football+games+2019+android, which is likely used to funnel users to malicious content. The document body contains garbled text but also includes the same malicious URL and several benign Shopify URLs, along with other unknown URLs.

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=football+games+2019+android
    • http://rinuwoje.colorwheelsmobileartroom.com/uploads/1/3/0/7/130739678/vipipivek_vowerubub.pdf
    • http://mejinus.nutrismartworld.com/uploads/1/3/2/3/132302751/7978660.pdf
    • http://files.medicalpapyrus.com/uploads/1/3/1/4/131453036/ff0a6a8a0a3f54.pdf
    • https://cdn.shopify.com/s/files/1/0437/5802/6901/files/learn_english_book_1.pdf
    • https://cdn.shopify.com/s/files/1/0430/6547/5226/files/zosebobo.pdf
    • https://cdn.shopify.com/s/files/1/0434/1425/7815/files/tavifupetij.pdf
    • https://cdn.shopify.com/s/files/1/0433/3905/5258/files/46263863542.pdf
    • https://cdn.shopify.com/s/files/1/0439/5145/6411/files/balu_mama_song.pdf
    • https://cdn.shopify.com/s/files/1/0440/5270/9526/files/bamegixemagowozovawo.pdf
    • https://cdn.shopify.com/s/files/1/0428/8492/3555/files/domejadokokenafovilafesov.pdf
    • https://cdn.shopify.com/s/files/1/0434/2956/0476/files/77303735747.pdf
    • https://cdn.shopify.com/s/files/1/0432/1394/7041/files/english_to_bangla_conversation_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/2866/7816/files/sscn_bkn_go_id_formasi_2019.pdf
    • https://cdn.shopify.com/s/files/1/0439/3123/8555/files/wegobewutagipebesupufosu.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_off000065f0.bin
93dd5706fb7a85d883a00e6fabd1d78aad181cf1a78a59deef0f20afaabded99
pdf-font-stream PDF embedded font (sfnt) at offset 0x65F0 5724 bytes
font_01_sfnt_off00007951.bin
251725c8dc634f1ffdf74c793032265039621191bbd840bee82913214facf04e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7951 10212 bytes