Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb708e84bdb98fa6…

MALICIOUS

PDF

54.9 KB Created: 2020-08-09 03:08:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1c0b041ddfa5f287386c1e8249594f7c SHA-1: 328a3d1778bab8fe3bef3ad31e503161dc7e26e6 SHA-256: eb708e84bdb98fa68ed3ed28db45f6f1c0f24c1dfed259ccbdc971a2d5759e0f
152 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to its inclusion of a link to a known malicious redirector, ttraff.com. The document also contains a large number of external links, many hosted on Shopify, suggesting a link farm intended to obscure the ultimate destination. The primary malicious URL is https://ttraff.com/pify?keyword=anatomy+and+physiology+for+nurses+pdf, which likely serves as a gateway to further 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=anatomy+and+physiology+for+nurses+pdf
    • http://files.upwardboundministriesinc.com/uploads/1/3/1/4/131437823/e940bf4ae1.pdf
    • http://files.odazzitclub.net/uploads/1/3/0/7/130739202/4861054.pdf
    • http://tepib.angelointelligence.com/uploads/1/3/0/8/130874359/3aa9cfeefbcc.pdf
    • http://files.realmccoycabins.com/uploads/1/3/0/9/130968943/vijunowufo-kujere-tesesilu-relix.pdf
    • http://sosugub.marchesemarket.com/uploads/1/3/1/4/131406149/nexufexalonarafezob.pdf
    • https://cdn.shopify.com/s/files/1/0434/2795/4840/files/10_day_forecast_destin_fl.pdf
    • https://cdn.shopify.com/s/files/1/0429/9299/2410/files/kindle_cloud_reader_to.pdf
    • https://cdn.shopify.com/s/files/1/0432/8180/9566/files/repolu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4121/0024/files/suzuki_intruder_vs800_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/8208/7576/files/16710064788.pdf
    • https://cdn.shopify.com/s/files/1/0432/8180/9558/files/35194147167.pdf
    • https://cdn.shopify.com/s/files/1/0440/8714/8696/files/fewawuresegafevowumi.pdf
    • https://cdn.shopify.com/s/files/1/0438/1786/1277/files/34861557703.pdf
    • https://cdn.shopify.com/s/files/1/0428/9665/4499/files/potepituxoku.pdf
    • https://cdn.shopify.com/s/files/1/0432/1814/1347/files/causes_of_american_revolution_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/6495/0945/files/sovoxamizapesamugi.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007609.bin
5175df605c55f481e1198e77d7193d9cafc59f858e7561ef4def98b3af41d72e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7609 5544 bytes
font_01_sfnt_off000088c2.bin
2d1419103f7baca24c443a0fa032df32a06c37f6d2dc492a48115ae64bf378fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88C2 2576 bytes
font_02_sfnt_off0000927e.bin
b0c052af5d32d83ab9b78e15d3993e8585e8cab5731b31bf1e7637478ced2798		 pdf-font-stream PDF embedded font (sfnt) at offset 0x927E 9780 bytes
font_03_sfnt_off0000b432.bin
6f05fcc33dc372c65fe8ed4596c490c1c5fa3e30d289e41d945a04c13f239fa5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB432 16780 bytes

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