Malicious PDF — malware analysis report

Static analysis result for SHA-256 28146b46b436b93a…

MALICIOUS

PDF

40.3 KB Created: 2020-08-25 01:52:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a5180f4400e8bb2f0535a6ffc3038692 SHA-1: 5e156a24fecd954b4e355d52ada4145ac62be771 SHA-256: 28146b46b436b93aab57a99fecbdd9be773c321c5d08ab714470f40cf8336a2e
150 Risk Score

Malware Insights

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

The PDF contains a link farm with numerous external links, including one pointing to a known malicious redirector. The primary malicious URL identified is https://ttraff.com/pify?keyword=anemia+microcitica+hipocromica+pdf+causas. This suggests the document is designed to lure users into clicking malicious links, likely for phishing or to download further malware. The ML classifier strongly supports the malicious nature of this PDF.

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.com/pify?keyword=anemia+microcitica+hipocromica+pdf+causas
    • http://files.mascotwesley.com.au/uploads/1/3/1/6/131606025/866323e51.pdf
    • http://files.ranchodorado.com/uploads/1/3/1/4/131406506/mevukorasegake-pomemadasewen-sugipagidukaji.pdf
    • http://files.foe2051.com/uploads/1/3/1/3/131378952/77026611.pdf
    • http://zejiz.jackiehagan.org/uploads/1/3/0/7/130739777/ed98769124.pdf
    • https://cdn.shopify.com/s/files/1/0434/6911/1448/files/biotechnology_of_natural_products.pdf
    • https://cdn.shopify.com/s/files/1/0431/1384/0794/files/kesorevudewetekirug.pdf
    • https://cdn.shopify.com/s/files/1/0430/0275/7281/files/audit_report_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/3989/1357/files/calendario_lunare_capelli_gennaio_2020.pdf
    • https://cdn.shopify.com/s/files/1/0432/4494/5571/files/kodatigikukilefevu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/badass_live_wallpapers_for_android.pdf
    • https://cdn.shopify.com/s/files/1/0430/8205/5842/files/53571309221.pdf
    • https://cdn.shopify.com/s/files/1/0431/6332/0471/files/student_brag_sheet_for_letter_of_recommendation.pdf
    • https://cdn.shopify.com/s/files/1/0434/4109/4817/files/81620275211.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_off0000603b.bin
2534b22aa045b157e32df328dfc701dd62b580e65cbebf185de616637a96566d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x603B 5352 bytes
font_01_sfnt_off00007237.bin
80919c2f0ce719a16f38bd35172dce44ce0ae4f1a11f872cd2fbf1ff5fd6705a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7237 10160 bytes

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