Malicious PDF — malware analysis report

Static analysis result for SHA-256 0965064a9482aa89…

MALICIOUS

PDF

65.7 KB Created: 2020-08-07 06:20:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: def0c85021c257a9e3e3604122bffe6c SHA-1: 4db4ae9d3c14eee1d78145833febfcc39116f651 SHA-256: 0965064a9482aa89002b5749f8ad9716aeb18ce7cd2f3638a47c3e984732a04d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. One critical heuristic identified a link to known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, indicating an attempt to lure users to click it under the guise of a dictionary download. 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.com/pify?keyword=oxford+dictionary+english+to+kannada+free+download+pdf
    • http://files.ecwriter.com/uploads/1/3/0/9/130970004/3f5dc2c47e5afca.pdf
    • http://files.inspiredayurveda.com/uploads/1/3/2/7/132740339/pinakomewok.pdf
    • http://gadumag.wildphlowerwellness.com/uploads/1/3/1/4/131437378/2927348.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.opentle.org
    • https://cdn.shopify.com/s/files/1/0436/1447/0302/files/29689070153.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zotogobujadafozafinuv.pdf
    • https://cdn.shopify.com/s/files/1/0431/2373/6725/files/54622758332.pdf
    • https://cdn.shopify.com/s/files/1/0428/1552/0935/files/zuzuzebozapakokamezatewud.pdf
    • https://cdn.shopify.com/s/files/1/0434/0075/7398/files/tenima.pdf
    • https://cdn.shopify.com/s/files/1/0450/4079/5806/files/british_museum_brochure.pdf
    • https://cdn.shopify.com/s/files/1/0432/1650/2939/files/86587313105.pdf
    • https://cdn.shopify.com/s/files/1/0430/9699/8048/files/nevidopurajunamon.pdf
    • https://cdn.shopify.com/s/files/1/0437/8024/3617/files/74808642736.pdf
    • https://cdn.shopify.com/s/files/1/0440/2960/8101/files/pifarovewomegijis.pdf
    • https://cdn.shopify.com/s/files/1/0440/3855/3765/files/retefafunu.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/
    • http://scripts.sil.org/OFL
    • http://www.gnu.org/licenses/gpl.html
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005630.bin
cb12c7d27c384abe4575ea4ab1756ac45dc6a46a2f4550f5c383eaed5d3bbf03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5630 15604 bytes
font_01_sfnt_off00008908.bin
2e20e7bb6963b4150d1ee24dde31cd789087e7702dd5883ec53868104d9ce025		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8908 5772 bytes
font_02_sfnt_off00009cbd.bin
b7aa4c49cf54cc7cec4c6dad4bd233e08d98f017e6a7613ce92b5e8388f5987a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CBD 9080 bytes
font_03_sfnt_off0000b65c.bin
524f9691ba975d51a9312c8750690e4e45e741b0da7f0da2f47ee23bbcff50f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB65C 10348 bytes
font_04_sfnt_off0000d937.bin
821024dcae0bd0005d85a3909e99575951459e0c4eb03fe35f66f6ea6f63827a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD937 19264 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.