Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc690e5e1e2d298a…

MALICIOUS

PDF

47.3 KB Created: 2020-08-02 16:48:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2562e86da01d3e91c9d4e3c6bfbbca5e SHA-1: 7be77f3fb1b4993ab25bd5138865b646d477ab1f SHA-256: bc690e5e1e2d298af283b3f5fdfd54d8a65a8bffc4d581a8d64cc916e11df8f7
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a critical heuristic firing indicating a malicious redirector link. The document body, though partially corrupted, contains text related to a book title and the malicious URL, suggesting a lure to disguise malicious activity. The ML classifier strongly flagged this PDF as malicious. The primary malicious URL is https://ttraff.ru/pify?keyword=chemical+principles+atkins+6th+edition+pdf, which is likely used to redirect users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.ru/pify?keyword=chemical+principles+atkins+6th+edition+pdf
    • http://files.eventfullyourscharleston.com/uploads/1/3/0/7/130739779/c78a2e4e3b.pdf
    • http://files.petalumaffa.com/uploads/1/3/1/8/131857983/nodevebigateb.pdf
    • http://files.artisanwineandcheesecellars.com/uploads/1/3/0/7/130740142/kemug.pdf
    • https://cdn.shopify.com/s/files/1/0430/8634/8450/files/37315846093.pdf
    • https://cdn.shopify.com/s/files/1/0433/8502/8758/files/zovikipat.pdf
    • https://cdn.shopify.com/s/files/1/0437/2915/8295/files/9968540902.pdf
    • https://cdn.shopify.com/s/files/1/0431/9395/8560/files/gaxebudegaledoli.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/69298849274.pdf
    • https://cdn.shopify.com/s/files/1/0429/2198/4166/files/naravemanedasowamaka.pdf
    • https://cdn.shopify.com/s/files/1/0431/3032/3095/files/bepoberebalukupebezenusa.pdf
    • https://cdn.shopify.com/s/files/1/0433/5622/5688/files/39620122997.pdf
    • https://cdn.shopify.com/s/files/1/0427/6987/5111/files/14711432874.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tuwupijisunuxavupo.pdf
    • https://cdn.shopify.com/s/files/1/0430/4044/0471/files/48165605305.pdf
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/lupasibitejoxaj.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
font_00_sfnt_off0000689f.bin
313e2020c0e5dd658a9736cda038417e52466bd9689c6dab6fce36bf2b485f5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x689F 5424 bytes
font_01_sfnt_off00007adc.bin
f89e47c5a53471ba3a4a8dff97377755fb66344579e7968b0ca7d3fe4d14c143		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ADC 12092 bytes
font_02_sfnt_off0000a213.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA213 4324 bytes

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