Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7b18e9950af2a24…

MALICIOUS

PDF

42.6 KB Created: 2020-08-07 22:07:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0a001e49d30d5df8c6ed4f721327f8ca SHA-1: e8f3a5432a78b76578a880ca21103e45e115ec9e SHA-256: e7b18e9950af2a24d733291817d036e449aef0706a4cbfff4053ad5e3ba4cbe8
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to funnel victims to malicious content. The document body text, though partially corrupted, suggests a lure related to 'Assassin's Creed Odyssey' to entice clicks. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to improve search engine ranking for malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/pify?keyword=assassin+s+creed+odyssey+pdf+guide+reddit
    • http://files.funkshunalgroove.net/uploads/1/3/1/3/131384401/kigowisenumuwi_tupupumajuka_naxawaxiki_xolaxux.pdf
    • http://meluvuj.chan6es.com/uploads/1/3/1/3/131380213/7572844.pdf
    • http://files.marzipan-media.com/uploads/1/3/1/8/131856184/7584706.pdf
    • http://files.stirrednotshakencincy.com/uploads/1/3/1/4/131407148/lixawapalotizel.pdf
    • http://files.jaylagemann.com/uploads/1/3/2/6/132682731/sokuvawis-woxidik-seralugaro-gedikaje.pdf
    • https://cdn.shopify.com/s/files/1/0429/1058/0903/files/97221308026.pdf
    • https://cdn.shopify.com/s/files/1/0432/0804/8808/files/jezesowo.pdf
    • https://cdn.shopify.com/s/files/1/0438/4741/8016/files/99505572314.pdf
    • https://cdn.shopify.com/s/files/1/0431/2114/8061/files/lefutexomilogefufival.pdf
    • https://cdn.shopify.com/s/files/1/0429/6808/8742/files/22365058979.pdf
    • https://cdn.shopify.com/s/files/1/0434/2346/5623/files/vocabulary_words_gre.pdf
    • https://cdn.shopify.com/s/files/1/0432/3724/5086/files/zinirejiwiloborifokidol.pdf
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/27562203515.pdf
    • https://cdn.shopify.com/s/files/1/0432/0470/6464/files/66841992051.pdf
    • https://cdn.shopify.com/s/files/1/0433/5311/2735/files/arm_cortex_m0_architecture.pdf
    • https://cdn.shopify.com/s/files/1/0433/8073/6151/files/kokusobakuj.pdf
    • https://cdn.shopify.com/s/files/1/0440/1430/5430/files/zubulukixepe.pdf
    • https://cdn.shopify.com/s/files/1/0437/5943/5928/files/53009012537.pdf
    • https://cdn.shopify.com/s/files/1/0428/5743/1199/files/biology_book_grade_12.pdf
    • https://cdn.shopify.com/s/files/1/0432/6418/0390/files/netixalarejafutasifugas.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_off0000681c.bin
8adab57f96780847c4a2908be04476330a7bc0797f731b5543d13600fb473893		 pdf-font-stream PDF embedded font (sfnt) at offset 0x681C 5380 bytes
font_01_sfnt_off00007a83.bin
7dd8e0b48c90266dbb4d101777eead4a6885d6ec39ebc7d3f863f3b067b40767		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A83 10236 bytes

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