Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b0b130c20f716f8…

MALICIOUS

PDF

50.1 KB Created: 2020-08-16 12:22:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f3bc3d3cd45124e7677eb3fd043dc5af SHA-1: 8e0a8f69cc4ce0790e6b89604e284e7f4addb062 SHA-256: 8b0b130c20f716f8902a144427ed8eac6c9139140c2db3ee7dbad69cd9869bef
152 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic, pointing to 'https://ttraff.cc/pify?keyword=beautiful+images+in+the+world'. This indicates a social engineering attempt to lure the user to a malicious site. The PDF also contains a large number of external links, as flagged by PDF_SEO_LINK_FARM, suggesting it's part of a link farm for SEO manipulation or traffic redirection. The ML classifier strongly supports the malicious nature of this PDF.

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.cc/pify?keyword=beautiful+images+in+the+world
    • http://files.authorajbell.com/uploads/1/3/1/8/131871977/mifuruwimajof.pdf
    • http://ximitapu.proclean1.net/uploads/1/3/0/8/130813612/6474686.pdf
    • http://bewon.bluecrimsonanime.com/uploads/1/3/1/6/131607062/subedazazexivi-vamugewikejad-vitikunexaz-didapevov.pdf
    • http://files.ilovemyminischnauzer.com/uploads/1/3/1/8/131856715/kimowojetuwoda.pdf
    • http://parasiv.brucejamesmenzies.com/uploads/1/3/0/7/130738870/dezibewawagutagod.pdf
    • https://cdn.shopify.com/s/files/1/0436/4229/0336/files/lava_lamp_random_number_generator.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nuruge.pdf
    • https://cdn.shopify.com/s/files/1/0451/7101/5829/files/xonibabenunixoriwadivexuz.pdf
    • https://cdn.shopify.com/s/files/1/0431/1102/2756/files/anti_terrorism_act_1997_pakistan.pdf
    • https://cdn.shopify.com/s/files/1/0437/2656/9633/files/d_d_4e_character_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0437/6163/1389/files/93737065868.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/fuwekotoritejo.pdf
    • https://cdn.shopify.com/s/files/1/0434/7723/7920/files/xevapizu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9489/1943/files/31554967427.pdf
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/xipikusorepazamo.pdf
    • https://cdn.shopify.com/s/files/1/0434/8834/6262/files/81989956813.pdf
    • https://cdn.shopify.com/s/files/1/0431/3110/9540/files/64323683323.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_off00006acc.bin
8a4f113f90c1943613ec123af0eb5d238322efb672c1dfbf9954c501cb8609b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ACC 5464 bytes
font_01_sfnt_off00007d41.bin
7f6a5ad5fb6aa86a90c8ff78864ec5288e53efdcda0e45e1e85f2e3a66516057		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D41 10024 bytes
font_02_sfnt_off00009fc8.bin
37f8539e59402e7697e62a7a4ecaed7c54dca0fe1900f3aaeaf3d1366f784818		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FC8 17996 bytes

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