Malicious PDF — malware analysis report

Static analysis result for SHA-256 19bdc2c02074216f…

MALICIOUS

PDF

49.1 KB Created: 2020-08-02 07:46:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0db34cfbc88b2e79c187624362dbf23e SHA-1: cc1997f708da0d2e1fe04126a3b4eb518180308d SHA-256: 19bdc2c02074216fbbc4e853550f6f1cf9af1ca092d88bf447fdb4e9e97ab34b
154 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific malicious redirector URL, 'https://ttraff.ru/pify?keyword=bladedancer+lineage+of+light', which is indicative of a phishing or malware distribution attempt. The ML classifier strongly supports this assessment. The document body, though heavily obfuscated, contains references to the game 'Bladedancer lineage of light', suggesting a lure to entice users to click the malicious link. No scripts were extracted from this sample.

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.ru/pify?keyword=bladedancer+lineage+of+light
    • http://files.rbdist.com/uploads/1/3/1/8/131860938/juzitejifa.pdf
    • http://files.burchfarmscountrymarketandwinery.com/uploads/1/3/0/9/130969061/08d509554f.pdf
    • http://files.fotaburdur.com/uploads/1/3/0/7/130739253/telotosoted_buxajigifar_serasetowap_lukikotovulula.pdf
    • http://files.heilandconsultingllc.com/uploads/1/3/0/8/130814874/7a12ba807.pdf
    • https://cdn.shopify.com/s/files/1/0432/5077/8275/files/39178523065.pdf
    • https://cdn.shopify.com/s/files/1/0431/6286/1730/files/79721265876.pdf
    • https://cdn.shopify.com/s/files/1/0432/4658/3976/files/17180526648.pdf
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/vanewanimufobifumudag.pdf
    • https://cdn.shopify.com/s/files/1/0430/6596/6741/files/remofaja.pdf
    • https://cdn.shopify.com/s/files/1/0429/8162/1919/files/dekopowixavedojo.pdf
    • https://cdn.shopify.com/s/files/1/0432/4550/2626/files/vipigufupipugujuj.pdf
    • https://cdn.shopify.com/s/files/1/0433/8309/5459/files/sikaditoxizakoro.pdf
    • https://cdn.shopify.com/s/files/1/0434/1288/1564/files/xekajaw.pdf
    • https://cdn.shopify.com/s/files/1/0433/7755/7660/files/bigukevaloxaji.pdf
    • https://cdn.shopify.com/s/files/1/0433/1244/7652/files/joni_mitchell_for_the_roses.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/nizagavujadijef.pdf
    • https://cdn.shopify.com/s/files/1/0431/9592/4637/files/yamaha_dgx_230_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/9419/6902/files/80154575775.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/
    • https://cdn.shopify.com/s/files/1/0434/1288/1564/files/xekajaw.p

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072ce.bin
79a8b5c5b2c1bf274480b2f615f6d48c2eb83072587aa6cf97a548df97d96888		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72CE 4500 bytes
font_01_sfnt_off0000829c.bin
c8a71d390e50aaa84c955e2b9a347284ff93510ef7495c9430168e5f5361875c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x829C 5156 bytes
font_02_sfnt_off00009426.bin
0c7bf5e26f08fe80291a60f474734843fe47bc1977255c01d606255fcb6f9423		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9426 10060 bytes

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