Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff669e7ddc4b7926…

MALICIOUS

PDF

42.0 KB Created: 2020-09-08 13:33:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ba1c72934219c3217dac727d7079901a SHA-1: 0420d3063782f76309c43dba6e43d020686133ff SHA-256: ff669e7ddc4b7926cd6f57ec3ffbdd4850e0692c5f23064ceca1ec3840e4f755
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link leads to a URL that appears to be part of a link farm, likely intended to obscure the final malicious destination. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves luring the user via a seemingly innocuous topic to a malicious redirector.

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=formica+countertop+glue
    • https://cdn.shopify.com/s/files/1/0437/7188/7767/files/parukumidavud.pdf
    • https://cdn.shopify.com/s/files/1/0432/4828/7912/files/african_musical_instruments.pdf
    • https://cdn.shopify.com/s/files/1/0435/7062/6723/files/phonetic_dictionary_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/0832/6812/files/fanig.pdf
    • https://cdn.shopify.com/s/files/1/0434/2913/4487/files/are_plant_cell_and_animal_cell_eukaryotic_or_prokaryotic.pdf
    • https://cdn.shopify.com/s/files/1/0432/3665/5259/files/connected_ed_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/4939/4071/files/garofabopowepotezawakatud.pdf
    • https://cdn.shopify.com/s/files/1/0431/4929/5776/files/traditional_bowyer_s_bible_complete_set.pdf
    • https://cdn.shopify.com/s/files/1/0431/3494/3388/files/sagijavejesekenijidewuwu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4895/9141/files/32625999416.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/waxigulazatep.pdf
    • https://cdn.shopify.com/s/files/1/0435/0056/8736/files/ancient_egypt_history_download.pdf
    • https://static.usrfiles.com/ugd/2994dd_7314d801b9ee4ef49d228e838fd0cfac.pdf
    • https://static.usrfiles.com/ugd/70c1f8_fcb9c0e266d2441e815acfd360bafae9.pdf
    • https://static.usrfiles.com/ugd/9b7d8a_5bd3d2b95eb745c394f28ee683950163.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067d7.bin
02c04fff7ca9d9866a1cb2d4d505e495655e313b5e9acabd6affc698fb265c00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67D7 5028 bytes
font_01_sfnt_off000078df.bin
6d4d67e2db946f56932e9b13a74d6a45e4f7affc7b8f14ea314729046ed6d27a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78DF 10024 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.