Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1e98b15ca2019f9…

MALICIOUS

PDF

51.2 KB Created: 2020-09-22 02:30:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b1d01926bcd8f83450d270c1f4e97247 SHA-1: 767afb7c6f323d76217292d50fd4c54c72dbd0a1 SHA-256: b1e98b15ca2019f998523ee67490777532191d500aaac1a2ddd2109ab40cd82a
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to suspicious domains and appear to be part of a link farm. One prominent link, 'https://ttraff.club/wix?keyword=portal+gun+mod+controls', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. The ML classifier also strongly indicated maliciousness.

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.club/wix?keyword=portal+gun+mod+controls
    • http://dugop.readysportsstore.com/uploads/1/3/2/6/132681556/pawuwik-linezadelati-tegeworidiw-kabotalax.pdf
    • http://loxiraxe.sharkfishingworldwide.co/uploads/1/3/1/6/131637254/luzajimelerujadewu.pdf
    • http://puvodofes.dantealighierimelbourne.com/uploads/1/3/1/4/131409090/fiditibubin.pdf
    • http://bexob.quattrociocchiwoodwork.com/uploads/1/3/1/8/131859527/banasibin.pdf
    • https://cdn.shopify.com/s/files/1/0435/8681/4109/files/68367889498.pdf
    • https://cdn.shopify.com/s/files/1/0433/7614/8641/files/periodic_table_of_elements_black_and_white.pdf
    • https://cdn.shopify.com/s/files/1/0464/0771/2923/files/batexuxabo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6372/1637/files/zikisalujizupirorun.pdf
    • https://cdn.shopify.com/s/files/1/0435/3759/6580/files/kixipewo.pdf
    • https://cdn.shopify.com/s/files/1/0433/7198/7098/files/online_admission_form_ba_punjab_university.pdf
    • https://cdn.shopify.com/s/files/1/0469/9265/4488/files/90160920328.pdf
    • https://cdn.shopify.com/s/files/1/0433/8925/5847/files/17273311677.pdf
    • https://cdn.shopify.com/s/files/1/0431/9870/9918/files/pagodotupurusizirelewaxi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8806/8254/files/47707495321.pdf
    • https://cdn.shopify.com/s/files/1/0429/0412/5599/files/13534528030.pdf
    • https://cdn.shopify.com/s/files/1/0436/9629/1994/files/82326085616.pdf
    • https://cdn.shopify.com/s/files/1/0429/4197/2636/files/worinovuxeduz.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_off0000677b.bin
e4dec64027daab45b47c4bba7fb4175e58990e62e933e7e05d8d91da6de7909d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x677B 4976 bytes
font_01_sfnt_off0000783a.bin
0296b15a855ee1a27b5735d45b810e11e3e5b5f3167514226446b891dbf5050a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x783A 10168 bytes
font_02_sfnt_off00009b3c.bin
8ce0575abc6f686af3c1393089841c21814f5c4838d5adbe0d649219e58da802		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B3C 16064 bytes
font_03_sfnt_off0000afd2.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAFD2 4324 bytes

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