Malicious PDF — malware analysis report

Static analysis result for SHA-256 47f2a52de2e76b3a…

MALICIOUS

PDF

52.0 KB Created: 2020-07-20 03:19:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 379802900b6d89c1a4511888a2ac2c15 SHA-1: 1946da80cee09e4564fb82ce355ae53725dccf81 SHA-256: 47f2a52de2e76b3a71f4b609ab444bdc7207283c56029bfdccfc4f761889e58c
152 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by a machine learning classifier and contains a large number of embedded links, including one pointing to a known malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting an attempt to manipulate search engine results or distribute content through a link farm. The primary malicious link identified is https://ttraff.cc/wb?keyword=ibanez%20gio%20gsr200%20manual, which likely leads to a phishing or malware delivery site.

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.cc/wb?keyword=ibanez%20gio%20gsr200%20manual
    • http://files.auntbettyskitchen.com/uploads/1/3/0/7/130739260/mogizereti.pdf
    • http://files.doceydandies.org/uploads/1/3/1/4/131407635/xitebanazofepelatet.pdf
    • http://files.losazaharesvillas.com/uploads/1/3/1/6/131606025/b2ded311d51a1cc.pdf
    • http://files.ave-design-co.com/uploads/1/3/1/3/131382395/4057445.pdf
    • http://files.primgharchurch.org/uploads/1/3/1/4/131483031/xoren.pdf
    • http://files.ave-design-co.com/
    • https://miserowage857454741.files.wordpress.com/2020/06/22998455069.pdf
    • https://xepojuk483058906.files.wordpress.com/2020/07/pixuludenawetagoj.pdf
    • https://lalokoxon.files.wordpress.com/2020/06/45123536347.pdf
    • https://kixavokof.files.wordpress.com/2020/06/64447002630.pdf
    • https://taxowedolez.files.wordpress.com/2020/07/45532330553.pdf
    • https://rotuwepene1407802.files.wordpress.com/2020/06/17878286673.pdf
    • https://fizosiximog.files.wordpress.com/2020/06/6082889074.pdf
    • https://naxopovo.files.wordpress.com/2020/07/ruviguxuzelapumuremuxe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kilezibuvi.pdf
    • https://cdn.shopify.com/s/files/1/0429/6579/4969/files/15271881759.pdf
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/sirasulejusewu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7079/9516/files/maruwosexorisu.pdf
    • https://cdn.shopify.com/s/files/1/0436/2951/0814/files/mogibov.pdf
    • https://cdn.shopify.com/s/files/1/0430/8926/4794/files/38743786567.pdf
    • https://cdn.shopify.com/s/files/1/0427/3651/7286/files/88244909632.pdf
    • https://cdn.shopify.com/s/files/1/0433/2145/8853/files/pabugukava.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_off00008d1f.bin
7f4fb74281402afa3f2eae3dd93ad6ec85c80572636ecd818127b7b8e14edd34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D1F 5208 bytes
font_01_sfnt_off00009eae.bin
4faed11f70fe501eb6c8ba54494d2a8a111fec3c4133576c13d94219ea25257e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9EAE 10508 bytes

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