Malicious PDF — malware analysis report

Static analysis result for SHA-256 a87c84ade11dd196…

MALICIOUS

PDF

50.3 KB Created: 2020-09-21 02:49:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9fcbd7353b9e0b1d2cd0b4d110134268 SHA-1: 853689bc53a303b147d3da35e8f5299ec30b6141 SHA-256: a87c84ade11dd1962546320bfd0d417140b8d8320d857ceb19fe249c6255270c
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.me/wix?keyword=as+long+as+you+are+there+mp3+download`. This URL is presented within the document body, suggesting a social engineering lure to trick the user into downloading content. The presence of a large number of external PDF links also indicates a link farm, likely for SEO manipulation or to distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.me/wix?keyword=as+long+as+you+are+there+mp3+download
    • http://files.creatingthespaces.ca/uploads/1/3/1/4/131483343/b5880.pdf
    • http://files.adorote.org/uploads/1/3/1/3/131382982/8143596ebf444.pdf
    • https://272a61be-7317-42b5-a961-998b27062c77.filesusr.com/ugd/1e533a_ee84bd72d3cb4602878c031107013848.pdf?index=true
    • https://1350c354-e03f-4b5e-8e94-17e6850bb814.filesusr.com/ugd/de3d83_b79623b67cd348baaed8c290a3cad872.pdf?index=true
    • https://9b08a2d8-6732-44c5-977d-99ffdbbe6d7a.filesusr.com/ugd/7a7fb1_ac472413ffa647e3bd97323f8aa62c4b.pdf?index=true
    • https://216a8d3d-e8ef-4f7c-a698-4dc7eae6e769.filesusr.com/ugd/80bfa9_f5d70ef9478847c4bfbb8145d68e759d.pdf?index=true
    • https://f2753e37-ae36-4a4f-a810-0b6244ad7685.filesusr.com/ugd/800b88_d9faf85330a945c88cd84e09a8050ca6.pdf?index=true
    • https://60509471-089c-4110-8d2b-1465b161904d.filesusr.com/ugd/b48b60_c9dd0cf272374a8c8338cbdeddb18a3a.pdf?index=true
    • https://a09ead4c-38eb-4d6c-a931-c9d08c4ef396.filesusr.com/ugd/fe83c3_209eeceb4fae4663ab0413f22d5080d2.pdf?index=true
    • https://1bb9cd73-1698-4b5e-b3b7-8539a26740d8.filesusr.com/ugd/4733ca_66ef4e2761bc45c1b6152e3366b21737.pdf?index=true
    • https://1fc550fa-912a-46ab-907c-e9de2dc86081.filesusr.com/ugd/74a852_2a974ff823bf4af8a410dd122415fc7c.pdf?index=true
    • https://7ceae620-6a59-4e19-94a0-e0275bf4d398.filesusr.com/ugd/1e11d0_fe35be2bf2894c4c829bf7c6b43c2508.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nejoxalivivurotuzepebibus.pdf
    • https://cdn.shopify.com/s/files/1/0432/8367/7339/files/family_case_study_format.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3098/files/pokemon_tower_defense_3_unblocked.pdf
    • https://cdn.shopify.com/s/files/1/0437/5232/5272/files/totexebujo.pdf
    • https://cdn.shopify.com/s/files/1/0435/6728/4387/files/craftsman_dlt_3000_owners_manual.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007703.bin
e04abe89e5200267f254ea06f1478bc6e49cb73dcf00ce9349ef83e378ac8913		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7703 5556 bytes
font_01_sfnt_off000089cf.bin
d775d2308c7805cb3c3a19f1705ad59bdf947d093a12eb36e7a5af626f315aa3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89CF 10496 bytes
font_02_sfnt_off0000adc8.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xADC8 4324 bytes

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