Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e9111b6984fb74f…

MALICIOUS

PDF

75.6 KB Created: 2020-08-14 00:19:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 424914f9e71f93e0983ef3e2247c5335 SHA-1: 9ffbf927581ac77629122b134c864efc392c2b3d SHA-256: 9e9111b6984fb74fffa596c9dc1807f6f5dd9f1322f230526d9cb3c8e4970795
120 Risk Score

Malware Insights

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

The PDF file contains a link disguised as a 'weather update app apk' which redirects to a malicious URL. The PDF also contains a large number of external links, many of which point to Shopify domains, suggesting a link farm or redirection strategy. The primary malicious URL identified is ttraff.cc, which is flagged as a malicious redirector.

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.cc/pify?keyword=weather+update+app+apk
    • http://files.romainewashington.com/uploads/1/3/1/8/131857193/ropodefi.pdf
    • http://files.pamelamausethmosaics.com/uploads/1/3/1/4/131406592/b05ec3bcd272.pdf
    • http://files.firemagick.org/uploads/1/3/1/3/131381802/sesisamizuj-simisetejezox.pdf
    • http://files.natindulge.com/uploads/1/3/0/8/130874254/3199919a5f0.pdf
    • https://cdn.shopify.com/s/files/1/0427/6980/9564/files/tuwes.pdf
    • https://cdn.shopify.com/s/files/1/0430/6052/7253/files/82035047380.pdf
    • https://cdn.shopify.com/s/files/1/0430/9676/8673/files/core_java_concepts_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0433/0674/6011/files/chains_laurie_halse_anderson.pdf
    • https://cdn.shopify.com/s/files/1/0435/5627/4339/files/70100333664.pdf
    • https://cdn.shopify.com/s/files/1/0431/6971/0241/files/cisco_catalyst_3650_manual.pdf
    • https://cdn.shopify.com/s/files/1/0448/0362/1025/files/child_development_an_active_learning_approach_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/4893/4295/files/pupekovelurajinibir.pdf
    • https://cdn.shopify.com/s/files/1/0438/4679/5424/files/bodybuilding_workout_routines.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8428/files/kusaladilawuzenamax.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zisavugeti.pdf
    • https://cdn.shopify.com/s/files/1/0435/2504/6431/files/codeigniter_hmvc_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0438/4056/9494/files/91516213166.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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065ab.bin
d53784c6a2754efb75a610d9b215938bbe64308c52cc0d451771a6e89aeb5e8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65AB 16528 bytes
font_01_sfnt_off00009af4.bin
1abdca442dde69ed1d59246494de605b487103b3e70cec9223bbc2749c2ad059		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AF4 4916 bytes
font_02_sfnt_off0000abad.bin
f267ea1bb974d54a61a3bef80314d207f84527e5a47b5f24ad11e0ea38bc1f7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xABAD 4704 bytes
font_03_sfnt_off0000bcbf.bin
51fd7e9965c4a870c31ee92005869f162b1f52ea6be03c31188e3ffd1dd42fcb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBCBF 7076 bytes
font_04_sfnt_off0000cfed.bin
ec3e5466fcdfe11653e803528d4c16e401a4cc4317b047d96723c4287978e163		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCFED 16068 bytes
font_05_sfnt_off000100f7.bin
7ddb83c14ff6d0a8121de9d8552c75c09adb80bb03c7dec56dbc7276150f55bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100F7 19092 bytes

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