Malicious PDF — malware analysis report

Static analysis result for SHA-256 d49adf31e7905858…

MALICIOUS

PDF

59.1 KB Created: 2020-09-07 20:01:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9fced52ad7ec0826eba98648a90d09b4 SHA-1: 39a4692c05f32641525139dceefef9dcc4c61a3c SHA-256: d49adf31e7905858f3fcd49ef27f2114bb9be350534a80f24e41dc554cb936e6
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is further supported by the presence of numerous external PDF links, many pointing to Shopify. The document body, though heavily corrupted, contains text fragments including the malicious redirector URL and benign-looking PDF titles, suggesting a lure. The primary malicious URL, https://ttraff.link/wix?keyword=terjemahan+al+quran+indonesia+pdf, is designed to redirect the user to potentially harmful 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.link/wix?keyword=terjemahan+al+quran+indonesia+pdf
    • https://cdn.shopify.com/s/files/1/0431/1692/0994/files/antigone_jean_anouilh.pdf
    • https://cdn.shopify.com/s/files/1/0430/8015/5290/files/zuvegemexagode.pdf
    • https://cdn.shopify.com/s/files/1/0429/7395/4204/files/mi_a3_android_10_update_release_date.pdf
    • https://cdn.shopify.com/s/files/1/0434/4345/4102/files/wibileronitovow.pdf
    • https://static.usrfiles.com/ugd/79e0dc_bb62592e1d2f4bc7985b50e0d9fddf5e.pdf
    • https://static.usrfiles.com/ugd/4ca7f5_e82337c6bd634fd9a58d56035063eb69.pdf
    • https://static.usrfiles.com/ugd/8c0e65_8799fc96aff64673a659e6f710decee1.pdf
    • https://static.usrfiles.com/ugd/86319b_6a8954d149fc491f9672255556da4f9d.pdf
    • https://static.usrfiles.com/ugd/b8c837_bdc34efc87aa42328f72b61516303866.pdf
    • https://static.usrfiles.com/ugd/866690_53634141be5c4bf5bfac07c43b5f4bb4.pdf
    • https://static.usrfiles.com/ugd/95bb70_f3fce323d1a0458eb1fa044167af3a0d.pdf
    • https://cdn.shopify.com/s/files/1/0432/3049/4878/files/88301051142.pdf
    • https://cdn.shopify.com/s/files/1/0430/7949/9940/files/74705955384.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
stream_005_off0000ad30.bin
89f3c18675f4b0874b9cc31ceefee3ff7d49faed70c2161b3635f4393ad51132		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xAD30 27760 bytes
font_00_sfnt_off00007074.bin
cca508d3b6a07a72064ebb43852d0f26bef8eac20daf7dff04756dff8d576ae5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7074 5432 bytes
font_01_sfnt_off000082bb.bin
1fedf0aeabe8e0eb0e77426711768e83697391387430ccc4204443a89531b060		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82BB 13532 bytes

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