Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e56ebf9fb6b11e4…

MALICIOUS

PDF

46.4 KB Created: 2020-09-16 16:55:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f512658f602bd32b2103ff0f36c7bc25 SHA-1: 582ca22980fa0057ca24f144de27cc30332c388e SHA-256: 2e56ebf9fb6b11e4263a5c31ddb4211e9b6bbaf746af0ada4555c9e711d084fc
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains embedded URLs, with one identified as a malicious redirector. The document body, though partially garbled, includes text related to 'Robotmon service manager' and the malicious URL, suggesting a lure. The ML classifier and critical heuristics strongly indicate malicious intent, likely for phishing or malware delivery via the redirector.

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.me/wix?keyword=robotmon+service+manager
    • https://cc31a410-7218-474d-9f4f-7ad09a22c212.filesusr.com/ugd/8ce377_d44e9a30a9a0433185d90c8b33978315.pdf?index=true
    • https://6c552bf3-9df4-434a-bc36-2259b811f005.filesusr.com/ugd/0582e0_808306a8a26845b6a7bc8365c6302486.pdf?index=true
    • https://df7a2c21-13a1-4929-8e84-9917587d856a.filesusr.com/ugd/565485_8d73ce472e164f8da399624b84be9528.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0432/4048/9122/files/la_biblia_devocional_de_estudio_versin_rvr_1960.pdf
    • https://cdn.shopify.com/s/files/1/0431/5440/7578/files/sage_300_chart_of_accounts_template.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wevola.pdf
    • https://cdn.shopify.com/s/files/1/0433/9571/1132/files/tisidaraz.pdf
    • https://cdn.shopify.com/s/files/1/0433/9502/3013/files/zedas.pdf
    • https://cdn.shopify.com/s/files/1/0434/0131/4456/files/givanosuzoselamebejuda.pdf
    • https://65a62450-aa6d-4b54-96db-a78b182ea674.filesusr.com/ugd/bd1c09_8301937847834be58f5ff36485e822e0.pdf?index=true
    • https://0d0b0ca7-6f54-431f-aff3-f78dc2fb69b8.filesusr.com/ugd/dcc11b_e183284d869b4976b4b7b49d372bc732.pdf?index=true
    • https://4fb03686-65f4-419c-adc7-7de88699e056.filesusr.com/ugd/a32c20_0d1aa0d8a58540ed8f3e1cabcdfef93b.pdf?index=true
    • 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_off0000552e.bin
41d4777cdf8cfbc7f23430803b9567aff58dc673718278b775da641c11d14b72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x552E 3676 bytes
font_01_sfnt_off0000622a.bin
25fdf54f6b6e6233060092d57b301d201238d227012a329e43cbef8463275b69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x622A 5296 bytes
font_02_sfnt_off00007426.bin
03a103e49106959d6c8012f5c50e22d84db9fcfc129e150ad539a39abd6be4ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7426 10480 bytes
font_03_sfnt_off000097fa.bin
9559dd1bd908241551916101fda3d445a26f5c4b506a1423f23393456f9d5940		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97FA 16036 bytes

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